Finding the Fourth Proportional to 142,503.45, 213,755.01 and 57,152.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,503.45 : 213,755.01 = 57,152.82 : x
2. Step 2: Convert to fraction form
   142,503.45/213,755.01 = 57,152.82/x
3. Step 3: Cross multiply
   142,503.45x = 213,755.01 × 57,152.82
4. Step 4: Simplify right side
   142,503.45x = 12,216,701,610.63
5. Step 5: Solve for x
   x = 12,216,701,610.63/142,503.45
6. Step 6: Final answer
   x = 85,729.16