Finding the Fourth Proportional to 61,142.28, 84,373.38 and 34,287.72

Step by Step Solution

1. Step 1: Write the proportion equation
   61,142.28 : 84,373.38 = 34,287.72 : x
2. Step 2: Convert to fraction form
   61,142.28/84,373.38 = 34,287.72/x
3. Step 3: Cross multiply
   61,142.28x = 84,373.38 × 34,287.72
4. Step 4: Simplify right side
   61,142.28x = 2,892,970,828.89
5. Step 5: Solve for x
   x = 2,892,970,828.89/61,142.28
6. Step 6: Final answer
   x = 47,315.39