Finding the Fourth Proportional to 118,108.86, 162,990.18 and 64,393.92

Step by Step Solution

1. Step 1: Write the proportion equation
   118,108.86 : 162,990.18 = 64,393.92 : x
2. Step 2: Convert to fraction form
   118,108.86/162,990.18 = 64,393.92/x
3. Step 3: Cross multiply
   118,108.86x = 162,990.18 × 64,393.92
4. Step 4: Simplify right side
   118,108.86x = 10,495,576,611.71
5. Step 5: Solve for x
   x = 10,495,576,611.71/118,108.86
6. Step 6: Final answer
   x = 88,863.58