Finding the Fourth Proportional to 284,443.12, 426,689.52 and 74,080.72

Step by Step Solution

1. Step 1: Write the proportion equation
   284,443.12 : 426,689.52 = 74,080.72 : x
2. Step 2: Convert to fraction form
   284,443.12/426,689.52 = 74,080.72/x
3. Step 3: Cross multiply
   284,443.12x = 426,689.52 × 74,080.72
4. Step 4: Simplify right side
   284,443.12x = 31,609,466,858.05
5. Step 5: Solve for x
   x = 31,609,466,858.05/284,443.12
6. Step 6: Final answer
   x = 111,127.55