Finding the Fourth Proportional to 78,575.87, 108,434.70 and 42,766.14

Step by Step Solution

1. Step 1: Write the proportion equation
   78,575.87 : 108,434.70 = 42,766.14 : x
2. Step 2: Convert to fraction form
   78,575.87/108,434.70 = 42,766.14/x
3. Step 3: Cross multiply
   78,575.87x = 108,434.70 × 42,766.14
4. Step 4: Simplify right side
   78,575.87x = 4,637,333,992.52
5. Step 5: Solve for x
   x = 4,637,333,992.52/78,575.87
6. Step 6: Final answer
   x = 59,017.28