Finding the Fourth Proportional to 142,425.31, 213,637.69 and 53,698.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,425.31 : 213,637.69 = 53,698.72 : x
2. Step 2: Convert to fraction form
   142,425.31/213,637.69 = 53,698.72/x
3. Step 3: Cross multiply
   142,425.31x = 213,637.69 × 53,698.72
4. Step 4: Simplify right side
   142,425.31x = 11,472,070,496.76
5. Step 5: Solve for x
   x = 11,472,070,496.76/142,425.31
6. Step 6: Final answer
   x = 80,547.98