Finding the Fourth Proportional to 86,098,238.28, 129,079,155.83 and 42,945,229.08

Step by Step Solution

1. Step 1: Write the proportion equation
   86,098,238.28 : 129,079,155.83 = 42,945,229.08 : x
2. Step 2: Convert to fraction form
   86,098,238.28/129,079,155.83 = 42,945,229.08/x
3. Step 3: Cross multiply
   86,098,238.28x = 129,079,155.83 × 42,945,229.08
4. Step 4: Simplify right side
   86,098,238.28x = 5,543,333,916,357,641
5. Step 5: Solve for x
   x = 5,543,333,916,357,641/86,098,238.28
6. Step 6: Final answer
   x = 64,383,825.12