Finding the Fourth Proportional to 78,359, 108,135.48 and 42,549.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,359 : 108,135.48 = 42,549.02 : x
2. Step 2: Convert to fraction form
   78,359/108,135.48 = 42,549.02/x
3. Step 3: Cross multiply
   78,359x = 108,135.48 × 42,549.02
4. Step 4: Simplify right side
   78,359x = 4,601,058,701.23
5. Step 5: Solve for x
   x = 4,601,058,701.23/78,359
6. Step 6: Final answer
   x = 58,717.68