Finding the Fourth Proportional to 108,429.30, 149,632.20 and 60,691.86

Step by Step Solution

1. Step 1: Write the proportion equation
   108,429.30 : 149,632.20 = 60,691.86 : x
2. Step 2: Convert to fraction form
   108,429.30/149,632.20 = 60,691.86/x
3. Step 3: Cross multiply
   108,429.30x = 149,632.20 × 60,691.86
4. Step 4: Simplify right side
   108,429.30x = 9,081,456,533.89
5. Step 5: Solve for x
   x = 9,081,456,533.89/108,429.30
6. Step 6: Final answer
   x = 83,754.64