Finding the Fourth Proportional to 118,779.20, 163,908.96 and 65,061.44

Step by Step Solution

1. Step 1: Write the proportion equation
   118,779.20 : 163,908.96 = 65,061.44 : x
2. Step 2: Convert to fraction form
   118,779.20/163,908.96 = 65,061.44/x
3. Step 3: Cross multiply
   118,779.20x = 163,908.96 × 65,061.44
4. Step 4: Simplify right side
   118,779.20x = 10,664,152,966.50
5. Step 5: Solve for x
   x = 10,664,152,966.50/118,779.20
6. Step 6: Final answer
   x = 89,781.32