Finding the Fourth Proportional to 78,696.89, 108,601.71 and 42,886.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,696.89 : 108,601.71 = 42,886.91 : x
2. Step 2: Convert to fraction form
   78,696.89/108,601.71 = 42,886.91/x
3. Step 3: Cross multiply
   78,696.89x = 108,601.71 × 42,886.91
4. Step 4: Simplify right side
   78,696.89x = 4,657,591,219.61
5. Step 5: Solve for x
   x = 4,657,591,219.61/78,696.89
6. Step 6: Final answer
   x = 59,183.93