Finding the Fourth Proportional to 142,778.25, 214,168.86 and 58,516.79

Step by Step Solution

1. Step 1: Write the proportion equation
   142,778.25 : 214,168.86 = 58,516.79 : x
2. Step 2: Convert to fraction form
   142,778.25/214,168.86 = 58,516.79/x
3. Step 3: Cross multiply
   142,778.25x = 214,168.86 × 58,516.79
4. Step 4: Simplify right side
   142,778.25x = 12,532,473,134.32
5. Step 5: Solve for x
   x = 12,532,473,134.32/142,778.25
6. Step 6: Final answer
   x = 87,775.79