Finding the Fourth Proportional to 537,282,061.10, 804,579,398.85 and 429,786,637.10

Step by Step Solution

1. Step 1: Write the proportion equation
   537,282,061.10 : 804,579,398.85 = 429,786,637.10 : x
2. Step 2: Convert to fraction form
   537,282,061.10/804,579,398.85 = 429,786,637.10/x
3. Step 3: Cross multiply
   537,282,061.10x = 804,579,398.85 × 429,786,637.10
4. Step 4: Simplify right side
   537,282,061.10x = 345,797,474,111,681,152
5. Step 5: Solve for x
   x = 345,797,474,111,681,152/537,282,061.10
6. Step 6: Final answer
   x = 643,605,098.97