Finding the Fourth Proportional to 78,696.28, 108,597 and 42,886.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,696.28 : 108,597 = 42,886.18 : x
2. Step 2: Convert to fraction form
   78,696.28/108,597 = 42,886.18/x
3. Step 3: Cross multiply
   78,696.28x = 108,597 × 42,886.18
4. Step 4: Simplify right side
   78,696.28x = 4,657,310,489.46
5. Step 5: Solve for x
   x = 4,657,310,489.46/78,696.28
6. Step 6: Final answer
   x = 59,180.82