Finding the Fourth Proportional to 118,774.72, 163,909.13 and 65,061.66

Step by Step Solution

1. Step 1: Write the proportion equation
   118,774.72 : 163,909.13 = 65,061.66 : x
2. Step 2: Convert to fraction form
   118,774.72/163,909.13 = 65,061.66/x
3. Step 3: Cross multiply
   118,774.72x = 163,909.13 × 65,061.66
4. Step 4: Simplify right side
   118,774.72x = 10,664,200,086.96
5. Step 5: Solve for x
   x = 10,664,200,086.96/118,774.72
6. Step 6: Final answer
   x = 89,785.10