Finding the Fourth Proportional to 78,686.23, 108,587.00 and 42,876.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,686.23 : 108,587.00 = 42,876.25 : x
2. Step 2: Convert to fraction form
   78,686.23/108,587.00 = 42,876.25/x
3. Step 3: Cross multiply
   78,686.23x = 108,587.00 × 42,876.25
4. Step 4: Simplify right side
   78,686.23x = 4,655,802,601.43
5. Step 5: Solve for x
   x = 4,655,802,601.43/78,686.23
6. Step 6: Final answer
   x = 59,169.22