Finding the Fourth Proportional to 118,488.42, 163,513.86 and 64,040.52

Step by Step Solution

1. Step 1: Write the proportion equation
   118,488.42 : 163,513.86 = 64,040.52 : x
2. Step 2: Convert to fraction form
   118,488.42/163,513.86 = 64,040.52/x
3. Step 3: Cross multiply
   118,488.42x = 163,513.86 × 64,040.52
4. Step 4: Simplify right side
   118,488.42x = 10,471,513,534.97
5. Step 5: Solve for x
   x = 10,471,513,534.97/118,488.42
6. Step 6: Final answer
   x = 88,375.84