Finding the Fourth Proportional to 147,028.32, 220,615.38 and 58,279.86

Step by Step Solution

1. Step 1: Write the proportion equation
   147,028.32 : 220,615.38 = 58,279.86 : x
2. Step 2: Convert to fraction form
   147,028.32/220,615.38 = 58,279.86/x
3. Step 3: Cross multiply
   147,028.32x = 220,615.38 × 58,279.86
4. Step 4: Simplify right side
   147,028.32x = 12,857,433,460.25
5. Step 5: Solve for x
   x = 12,857,433,460.25/147,028.32
6. Step 6: Final answer
   x = 87,448.69