Finding the Fourth Proportional to 78,432.22, 108,236.38 and 42,622.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,432.22 : 108,236.38 = 42,622.15 : x
2. Step 2: Convert to fraction form
   78,432.22/108,236.38 = 42,622.15/x
3. Step 3: Cross multiply
   78,432.22x = 108,236.38 × 42,622.15
4. Step 4: Simplify right side
   78,432.22x = 4,613,267,223.82
5. Step 5: Solve for x
   x = 4,613,267,223.82/78,432.22
6. Step 6: Final answer
   x = 58,818.52