Finding the Fourth Proportional to 112,753.32, 155,561.67 and 65,005.62

Step by Step Solution

1. Step 1: Write the proportion equation
   112,753.32 : 155,561.67 = 65,005.62 : x
2. Step 2: Convert to fraction form
   112,753.32/155,561.67 = 65,005.62/x
3. Step 3: Cross multiply
   112,753.32x = 155,561.67 × 65,005.62
4. Step 4: Simplify right side
   112,753.32x = 10,112,382,806.59
5. Step 5: Solve for x
   x = 10,112,382,806.59/112,753.32
6. Step 6: Final answer
   x = 89,685.90