Finding the Fourth Proportional to 89,813.74, 134,632.59 and 76,516.78

Step by Step Solution

1. Step 1: Write the proportion equation
   89,813.74 : 134,632.59 = 76,516.78 : x
2. Step 2: Convert to fraction form
   89,813.74/134,632.59 = 76,516.78/x
3. Step 3: Cross multiply
   89,813.74x = 134,632.59 × 76,516.78
4. Step 4: Simplify right side
   89,813.74x = 10,301,652,269.86
5. Step 5: Solve for x
   x = 10,301,652,269.86/89,813.74
6. Step 6: Final answer
   x = 114,700.18