Finding the Fourth Proportional to 78,322.62, 108,085.31 and 42,512.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,322.62 : 108,085.31 = 42,512.63 : x
2. Step 2: Convert to fraction form
   78,322.62/108,085.31 = 42,512.63/x
3. Step 3: Cross multiply
   78,322.62x = 108,085.31 × 42,512.63
4. Step 4: Simplify right side
   78,322.62x = 4,594,990,792.47
5. Step 5: Solve for x
   x = 4,594,990,792.47/78,322.62
6. Step 6: Final answer
   x = 58,667.48