Finding the Fourth Proportional to 75,499.71, 113,199.75 and 42,223.29

Step by Step Solution

1. Step 1: Write the proportion equation
   75,499.71 : 113,199.75 = 42,223.29 : x
2. Step 2: Convert to fraction form
   75,499.71/113,199.75 = 42,223.29/x
3. Step 3: Cross multiply
   75,499.71x = 113,199.75 × 42,223.29
4. Step 4: Simplify right side
   75,499.71x = 4,779,665,872.18
5. Step 5: Solve for x
   x = 4,779,665,872.18/75,499.71
6. Step 6: Final answer
   x = 63,307.08