Finding the Fourth Proportional to 79,981.31, 120,045.77 and 40,566.10

Step by Step Solution

1. Step 1: Write the proportion equation
   79,981.31 : 120,045.77 = 40,566.10 : x
2. Step 2: Convert to fraction form
   79,981.31/120,045.77 = 40,566.10/x
3. Step 3: Cross multiply
   79,981.31x = 120,045.77 × 40,566.10
4. Step 4: Simplify right side
   79,981.31x = 4,869,788,710.40
5. Step 5: Solve for x
   x = 4,869,788,710.40/79,981.31
6. Step 6: Final answer
   x = 60,886.58