Finding the Fourth Proportional to 118,443.26, 163,454.00 and 64,731.57

Step by Step Solution

1. Step 1: Write the proportion equation
   118,443.26 : 163,454.00 = 64,731.57 : x
2. Step 2: Convert to fraction form
   118,443.26/163,454.00 = 64,731.57/x
3. Step 3: Cross multiply
   118,443.26x = 163,454.00 × 64,731.57
4. Step 4: Simplify right side
   118,443.26x = 10,580,633,719.12
5. Step 5: Solve for x
   x = 10,580,633,719.12/118,443.26
6. Step 6: Final answer
   x = 89,330.83