Finding the Fourth Proportional to 522,082,875,061.17, 720,474,402,230.58 and 290,591,426,406.18

Step by Step Solution

1. Step 1: Write the proportion equation
   522,082,875,061.17 : 720,474,402,230.58 = 290,591,426,406.18 : x
2. Step 2: Convert to fraction form
   522,082,875,061.17/720,474,402,230.58 = 290,591,426,406.18/x
3. Step 3: Cross multiply
   522,082,875,061.17x = 720,474,402,230.58 × 290,591,426,406.18
4. Step 4: Simplify right side
   522,082,875,061.17x = 209,363,684,233,324,101,894,144
5. Step 5: Solve for x
   x = 209,363,684,233,324,101,894,144/522,082,875,061.17
6. Step 6: Final answer
   x = 401,016,187,724.59