Finding the Fourth Proportional to 142,043.61, 213,146.82 and 57,788.22

Step by Step Solution

1. Step 1: Write the proportion equation
   142,043.61 : 213,146.82 = 57,788.22 : x
2. Step 2: Convert to fraction form
   142,043.61/213,146.82 = 57,788.22/x
3. Step 3: Cross multiply
   142,043.61x = 213,146.82 × 57,788.22
4. Step 4: Simplify right side
   142,043.61x = 12,317,375,326.46
5. Step 5: Solve for x
   x = 12,317,375,326.46/142,043.61
6. Step 6: Final answer
   x = 86,715.45