Finding the Fourth Proportional to 118,123.54, 163,006.92 and 64,409.60

Step by Step Solution

1. Step 1: Write the proportion equation
   118,123.54 : 163,006.92 = 64,409.60 : x
2. Step 2: Convert to fraction form
   118,123.54/163,006.92 = 64,409.60/x
3. Step 3: Cross multiply
   118,123.54x = 163,006.92 × 64,409.60
4. Step 4: Simplify right side
   118,123.54x = 10,499,210,514.43
5. Step 5: Solve for x
   x = 10,499,210,514.43/118,123.54
6. Step 6: Final answer
   x = 88,883.30