Finding the Fourth Proportional to 142,480.52, 213,641.78 and 58,299.74

Step by Step Solution

1. Step 1: Write the proportion equation
   142,480.52 : 213,641.78 = 58,299.74 : x
2. Step 2: Convert to fraction form
   142,480.52/213,641.78 = 58,299.74/x
3. Step 3: Cross multiply
   142,480.52x = 213,641.78 × 58,299.74
4. Step 4: Simplify right side
   142,480.52x = 12,455,258,867.43
5. Step 5: Solve for x
   x = 12,455,258,867.43/142,480.52
6. Step 6: Final answer
   x = 87,417.28