Finding the Fourth Proportional to 142,460.54, 213,611.89 and 58,279.79

Step by Step Solution

1. Step 1: Write the proportion equation
   142,460.54 : 213,611.89 = 58,279.79 : x
2. Step 2: Convert to fraction form
   142,460.54/213,611.89 = 58,279.79/x
3. Step 3: Cross multiply
   142,460.54x = 213,611.89 × 58,279.79
4. Step 4: Simplify right side
   142,460.54x = 12,449,256,090.70
5. Step 5: Solve for x
   x = 12,449,256,090.70/142,460.54
6. Step 6: Final answer
   x = 87,387.40