Finding the Fourth Proportional to 128,348.01, 192,522.42 and 58,145.31

Step by Step Solution

1. Step 1: Write the proportion equation
   128,348.01 : 192,522.42 = 58,145.31 : x
2. Step 2: Convert to fraction form
   128,348.01/192,522.42 = 58,145.31/x
3. Step 3: Cross multiply
   128,348.01x = 192,522.42 × 58,145.31
4. Step 4: Simplify right side
   128,348.01x = 11,194,275,792.85
5. Step 5: Solve for x
   x = 11,194,275,792.85/128,348.01
6. Step 6: Final answer
   x = 87,218.15