Finding the Fourth Proportional to 118,331.86, 163,291.88 and 64,606.52

Step by Step Solution

1. Step 1: Write the proportion equation
   118,331.86 : 163,291.88 = 64,606.52 : x
2. Step 2: Convert to fraction form
   118,331.86/163,291.88 = 64,606.52/x
3. Step 3: Cross multiply
   118,331.86x = 163,291.88 × 64,606.52
4. Step 4: Simplify right side
   118,331.86x = 10,549,720,111.06
5. Step 5: Solve for x
   x = 10,549,720,111.06/118,331.86
6. Step 6: Final answer
   x = 89,153.67