Finding the Fourth Proportional to 78,279.32, 108,025.67 and 42,469.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,279.32 : 108,025.67 = 42,469.32 : x
2. Step 2: Convert to fraction form
   78,279.32/108,025.67 = 42,469.32/x
3. Step 3: Cross multiply
   78,279.32x = 108,025.67 × 42,469.32
4. Step 4: Simplify right side
   78,279.32x = 4,587,776,535.10
5. Step 5: Solve for x
   x = 4,587,776,535.10/78,279.32
6. Step 6: Final answer
   x = 58,607.78