Finding the Fourth Proportional to 78,445.17, 108,255 and 42,635.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,445.17 : 108,255 = 42,635.18 : x
2. Step 2: Convert to fraction form
   78,445.17/108,255 = 42,635.18/x
3. Step 3: Cross multiply
   78,445.17x = 108,255 × 42,635.18
4. Step 4: Simplify right side
   78,445.17x = 4,615,471,410.90
5. Step 5: Solve for x
   x = 4,615,471,410.90/78,445.17
6. Step 6: Final answer
   x = 58,836.91