Finding the Fourth Proportional to 78,322.53, 108,081.40 and 42,512.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78,322.53 : 108,081.40 = 42,512.23 : x
2. Step 2: Convert to fraction form
   78,322.53/108,081.40 = 42,512.23/x
3. Step 3: Cross multiply
   78,322.53x = 108,081.40 × 42,512.23
4. Step 4: Simplify right side
   78,322.53x = 4,594,781,335.52
5. Step 5: Solve for x
   x = 4,594,781,335.52/78,322.53
6. Step 6: Final answer
   x = 58,664.87