Finding the Fourth Proportional to 78,081.58, 107,753.43 and 42,272.35

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.58 : 107,753.43 = 42,272.35 : x
2. Step 2: Convert to fraction form
   78,081.58/107,753.43 = 42,272.35/x
3. Step 3: Cross multiply
   78,081.58x = 107,753.43 × 42,272.35
4. Step 4: Simplify right side
   78,081.58x = 4,554,990,706.66
5. Step 5: Solve for x
   x = 4,554,990,706.66/78,081.58
6. Step 6: Final answer
   x = 58,336.30