Finding the Fourth Proportional to 142,874.56, 214,296.78 and 58,643.60

Step by Step Solution

1. Step 1: Write the proportion equation
   142,874.56 : 214,296.78 = 58,643.60 : x
2. Step 2: Convert to fraction form
   142,874.56/214,296.78 = 58,643.60/x
3. Step 3: Cross multiply
   142,874.56x = 214,296.78 × 58,643.60
4. Step 4: Simplify right side
   142,874.56x = 12,567,134,647.61
5. Step 5: Solve for x
   x = 12,567,134,647.61/142,874.56
6. Step 6: Final answer
   x = 87,959.22