Finding the Fourth Proportional to 113,773.64, 156,638.60 and 89,531.87

Step by Step Solution

1. Step 1: Write the proportion equation
   113,773.64 : 156,638.60 = 89,531.87 : x
2. Step 2: Convert to fraction form
   113,773.64/156,638.60 = 89,531.87/x
3. Step 3: Cross multiply
   113,773.64x = 156,638.60 × 89,531.87
4. Step 4: Simplify right side
   113,773.64x = 14,024,147,051.86
5. Step 5: Solve for x
   x = 14,024,147,051.86/113,773.64
6. Step 6: Final answer
   x = 123,263.58