Finding the Fourth Proportional to 58,020.10, 81,403.10 and 58,020.10

Step by Step Solution

1. Step 1: Write the proportion equation
   58,020.10 : 81,403.10 = 58,020.10 : x
2. Step 2: Convert to fraction form
   58,020.10/81,403.10 = 58,020.10/x
3. Step 3: Cross multiply
   58,020.10x = 81,403.10 × 58,020.10
4. Step 4: Simplify right side
   58,020.10x = 4,723,016,002.31
5. Step 5: Solve for x
   x = 4,723,016,002.31/58,020.10
6. Step 6: Final answer
   x = 81,403.10