Finding the Fourth Proportional to 112,714.72, 155,519.61 and 66,751.15

Step by Step Solution

1. Step 1: Write the proportion equation
   112,714.72 : 155,519.61 = 66,751.15 : x
2. Step 2: Convert to fraction form
   112,714.72/155,519.61 = 66,751.15/x
3. Step 3: Cross multiply
   112,714.72x = 155,519.61 × 66,751.15
4. Step 4: Simplify right side
   112,714.72x = 10,381,112,037.45
5. Step 5: Solve for x
   x = 10,381,112,037.45/112,714.72
6. Step 6: Final answer
   x = 92,100.77