Finding the Fourth Proportional to 64,342.40, 88,681.61 and 42,793.61

Step by Step Solution

1. Step 1: Write the proportion equation
   64,342.40 : 88,681.61 = 42,793.61 : x
2. Step 2: Convert to fraction form
   64,342.40/88,681.61 = 42,793.61/x
3. Step 3: Cross multiply
   64,342.40x = 88,681.61 × 42,793.61
4. Step 4: Simplify right side
   64,342.40x = 3,795,005,896.09
5. Step 5: Solve for x
   x = 3,795,005,896.09/64,342.40
6. Step 6: Final answer
   x = 58,981.42