Finding the Fourth Proportional to 789,048,870.42, 1,087,996,363.65 and 590,173,017.78

Step by Step Solution

1. Step 1: Write the proportion equation
   789,048,870.42 : 1,087,996,363.65 = 590,173,017.78 : x
2. Step 2: Convert to fraction form
   789,048,870.42/1,087,996,363.65 = 590,173,017.78/x
3. Step 3: Cross multiply
   789,048,870.42x = 1,087,996,363.65 × 590,173,017.78
4. Step 4: Simplify right side
   789,048,870.42x = 642,106,097,268,986,880
5. Step 5: Solve for x
   x = 642,106,097,268,986,880/789,048,870.42
6. Step 6: Final answer
   x = 813,772,278.68