Finding the Fourth Proportional to 78,695.28, 108,595.62 and 42,885.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,695.28 : 108,595.62 = 42,885.18 : x
2. Step 2: Convert to fraction form
   78,695.28/108,595.62 = 42,885.18/x
3. Step 3: Cross multiply
   78,695.28x = 108,595.62 × 42,885.18
4. Step 4: Simplify right side
   78,695.28x = 4,657,142,710.91
5. Step 5: Solve for x
   x = 4,657,142,710.91/78,695.28
6. Step 6: Final answer
   x = 59,179.44