Finding the Fourth Proportional to 78,322.15, 108,084.66 and 42,512.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,322.15 : 108,084.66 = 42,512.15 : x
2. Step 2: Convert to fraction form
   78,322.15/108,084.66 = 42,512.15/x
3. Step 3: Cross multiply
   78,322.15x = 108,084.66 × 42,512.15
4. Step 4: Simplify right side
   78,322.15x = 4,594,911,278.62
5. Step 5: Solve for x
   x = 4,594,911,278.62/78,322.15
6. Step 6: Final answer
   x = 58,666.82