Finding the Fourth Proportional to 112,156.56, 168,271.29 and 74,868.21

Step by Step Solution

1. Step 1: Write the proportion equation
   112,156.56 : 168,271.29 = 74,868.21 : x
2. Step 2: Convert to fraction form
   112,156.56/168,271.29 = 74,868.21/x
3. Step 3: Cross multiply
   112,156.56x = 168,271.29 × 74,868.21
4. Step 4: Simplify right side
   112,156.56x = 12,598,170,276.69
5. Step 5: Solve for x
   x = 12,598,170,276.69/112,156.56
6. Step 6: Final answer
   x = 112,326.65