Finding the Fourth Proportional to 109,429.73, 151,012.98 and 59,128.73

Step by Step Solution

1. Step 1: Write the proportion equation
   109,429.73 : 151,012.98 = 59,128.73 : x
2. Step 2: Convert to fraction form
   109,429.73/151,012.98 = 59,128.73/x
3. Step 3: Cross multiply
   109,429.73x = 151,012.98 × 59,128.73
4. Step 4: Simplify right side
   109,429.73x = 8,929,205,720.92
5. Step 5: Solve for x
   x = 8,929,205,720.92/109,429.73
6. Step 6: Final answer
   x = 81,597.62