Finding the Fourth Proportional to 142,323.50, 213,506.10 and 58,088.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,323.50 : 213,506.10 = 58,088.78 : x
2. Step 2: Convert to fraction form
   142,323.50/213,506.10 = 58,088.78/x
3. Step 3: Cross multiply
   142,323.50x = 213,506.10 × 58,088.78
4. Step 4: Simplify right side
   142,323.50x = 12,402,308,871.56
5. Step 5: Solve for x
   x = 12,402,308,871.56/142,323.50
6. Step 6: Final answer
   x = 87,141.68