Finding the Fourth Proportional to 113,514, 156,388.50 and 89,631.96

Step by Step Solution

1. Step 1: Write the proportion equation
   113,514 : 156,388.50 = 89,631.96 : x
2. Step 2: Convert to fraction form
   113,514/156,388.50 = 89,631.96/x
3. Step 3: Cross multiply
   113,514x = 156,388.50 × 89,631.96
4. Step 4: Simplify right side
   113,514x = 14,017,407,776.46
5. Step 5: Solve for x
   x = 14,017,407,776.46/113,514
6. Step 6: Final answer
   x = 123,486.16