Finding the Fourth Proportional to 142,479.72, 213,640.68 and 58,299

Step by Step Solution

1. Step 1: Write the proportion equation
   142,479.72 : 213,640.68 = 58,299 : x
2. Step 2: Convert to fraction form
   142,479.72/213,640.68 = 58,299/x
3. Step 3: Cross multiply
   142,479.72x = 213,640.68 × 58,299
4. Step 4: Simplify right side
   142,479.72x = 12,455,038,003.32
5. Step 5: Solve for x
   x = 12,455,038,003.32/142,479.72
6. Step 6: Final answer
   x = 87,416.22