Finding the Fourth Proportional to 113,382.60, 156,474.46 and 64,992.59

Step by Step Solution

1. Step 1: Write the proportion equation
   113,382.60 : 156,474.46 = 64,992.59 : x
2. Step 2: Convert to fraction form
   113,382.60/156,474.46 = 64,992.59/x
3. Step 3: Cross multiply
   113,382.60x = 156,474.46 × 64,992.59
4. Step 4: Simplify right side
   113,382.60x = 10,169,680,347.15
5. Step 5: Solve for x
   x = 10,169,680,347.15/113,382.60
6. Step 6: Final answer
   x = 89,693.48