Finding the Fourth Proportional to 78,509.34, 108,344.88 and 42,701.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,509.34 : 108,344.88 = 42,701.40 : x
2. Step 2: Convert to fraction form
   78,509.34/108,344.88 = 42,701.40/x
3. Step 3: Cross multiply
   78,509.34x = 108,344.88 × 42,701.40
4. Step 4: Simplify right side
   78,509.34x = 4,626,478,058.83
5. Step 5: Solve for x
   x = 4,626,478,058.83/78,509.34
6. Step 6: Final answer
   x = 58,929.01