Finding the Fourth Proportional to 99,351.50, 137,105.98 and 54,029.91

Step by Step Solution

1. Step 1: Write the proportion equation
   99,351.50 : 137,105.98 = 54,029.91 : x
2. Step 2: Convert to fraction form
   99,351.50/137,105.98 = 54,029.91/x
3. Step 3: Cross multiply
   99,351.50x = 137,105.98 × 54,029.91
4. Step 4: Simplify right side
   99,351.50x = 7,407,823,759.86
5. Step 5: Solve for x
   x = 7,407,823,759.86/99,351.50
6. Step 6: Final answer
   x = 74,561.77