Finding the Fourth Proportional to 64,300.80, 88,720.72 and 38,811.32

Step by Step Solution

1. Step 1: Write the proportion equation
   64,300.80 : 88,720.72 = 38,811.32 : x
2. Step 2: Convert to fraction form
   64,300.80/88,720.72 = 38,811.32/x
3. Step 3: Cross multiply
   64,300.80x = 88,720.72 × 38,811.32
4. Step 4: Simplify right side
   64,300.80x = 3,443,368,254.55
5. Step 5: Solve for x
   x = 3,443,368,254.55/64,300.80
6. Step 6: Final answer
   x = 53,550.94