Finding the Fourth Proportional to 78,568.88, 108,422.98 and 42,758.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,568.88 : 108,422.98 = 42,758.12 : x
2. Step 2: Convert to fraction form
   78,568.88/108,422.98 = 42,758.12/x
3. Step 3: Cross multiply
   78,568.88x = 108,422.98 × 42,758.12
4. Step 4: Simplify right side
   78,568.88x = 4,635,962,953.76
5. Step 5: Solve for x
   x = 4,635,962,953.76/78,568.88
6. Step 6: Final answer
   x = 59,005.08