Finding the Fourth Proportional to 156,634.50, 216,155.88 and 89,566.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,634.50 : 216,155.88 = 89,566.50 : x
2. Step 2: Convert to fraction form
   156,634.50/216,155.88 = 89,566.50/x
3. Step 3: Cross multiply
   156,634.50x = 216,155.88 × 89,566.50
4. Step 4: Simplify right side
   156,634.50x = 19,360,325,626.02
5. Step 5: Solve for x
   x = 19,360,325,626.02/156,634.50
6. Step 6: Final answer
   x = 123,601.92