Finding the Fourth Proportional to 78,118.54, 107,803.65 and 42,308.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,118.54 : 107,803.65 = 42,308.62 : x
2. Step 2: Convert to fraction form
   78,118.54/107,803.65 = 42,308.62/x
3. Step 3: Cross multiply
   78,118.54x = 107,803.65 × 42,308.62
4. Step 4: Simplify right side
   78,118.54x = 4,561,023,662.46
5. Step 5: Solve for x
   x = 4,561,023,662.46/78,118.54
6. Step 6: Final answer
   x = 58,385.93