Finding the Fourth Proportional to 76,150.72, 105,143.43 and 61,126.03

Step by Step Solution

1. Step 1: Write the proportion equation
   76,150.72 : 105,143.43 = 61,126.03 : x
2. Step 2: Convert to fraction form
   76,150.72/105,143.43 = 61,126.03/x
3. Step 3: Cross multiply
   76,150.72x = 105,143.43 × 61,126.03
4. Step 4: Simplify right side
   76,150.72x = 6,427,000,456.48
5. Step 5: Solve for x
   x = 6,427,000,456.48/76,150.72
6. Step 6: Final answer
   x = 84,398.42