Finding the Fourth Proportional to 64,014.31, 88,381.35 and 57,288.37

Step by Step Solution

1. Step 1: Write the proportion equation
   64,014.31 : 88,381.35 = 57,288.37 : x
2. Step 2: Convert to fraction form
   64,014.31/88,381.35 = 57,288.37/x
3. Step 3: Cross multiply
   64,014.31x = 88,381.35 × 57,288.37
4. Step 4: Simplify right side
   64,014.31x = 5,063,223,479.90
5. Step 5: Solve for x
   x = 5,063,223,479.90/64,014.31
6. Step 6: Final answer
   x = 79,095.18