Finding the Fourth Proportional to 99,690,061.30, 149,555,309.55 and 56,579,917.30

Step by Step Solution

1. Step 1: Write the proportion equation
   99,690,061.30 : 149,555,309.55 = 56,579,917.30 : x
2. Step 2: Convert to fraction form
   99,690,061.30/149,555,309.55 = 56,579,917.30/x
3. Step 3: Cross multiply
   99,690,061.30x = 149,555,309.55 × 56,579,917.30
4. Step 4: Simplify right side
   99,690,061.30x = 8,461,827,046,114,900
5. Step 5: Solve for x
   x = 8,461,827,046,114,900/99,690,061.30
6. Step 6: Final answer
   x = 84,881,350.62