Finding the Fourth Proportional to 78,627.57, 108,503.17 and 42,816.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,627.57 : 108,503.17 = 42,816.79 : x
2. Step 2: Convert to fraction form
   78,627.57/108,503.17 = 42,816.79/x
3. Step 3: Cross multiply
   78,627.57x = 108,503.17 × 42,816.79
4. Step 4: Simplify right side
   78,627.57x = 4,645,757,444.22
5. Step 5: Solve for x
   x = 4,645,757,444.22/78,627.57
6. Step 6: Final answer
   x = 59,085.60