Finding the Fourth Proportional to 78,432.17, 108,236.30 and 42,622.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,432.17 : 108,236.30 = 42,622.10 : x
2. Step 2: Convert to fraction form
   78,432.17/108,236.30 = 42,622.10/x
3. Step 3: Cross multiply
   78,432.17x = 108,236.30 × 42,622.10
4. Step 4: Simplify right side
   78,432.17x = 4,613,257,647.94
5. Step 5: Solve for x
   x = 4,613,257,647.94/78,432.17
6. Step 6: Final answer
   x = 58,818.44