Finding the Fourth Proportional to 142,060.83, 213,091.54 and 57,761.49

Step by Step Solution

1. Step 1: Write the proportion equation
   142,060.83 : 213,091.54 = 57,761.49 : x
2. Step 2: Convert to fraction form
   142,060.83/213,091.54 = 57,761.49/x
3. Step 3: Cross multiply
   142,060.83x = 213,091.54 × 57,761.49
4. Step 4: Simplify right side
   142,060.83x = 12,308,484,856.79
5. Step 5: Solve for x
   x = 12,308,484,856.79/142,060.83
6. Step 6: Final answer
   x = 86,642.35