Finding the Fourth Proportional to 58,719.15, 81,030.20 and 31,861.10

Step by Step Solution

1. Step 1: Write the proportion equation
   58,719.15 : 81,030.20 = 31,861.10 : x
2. Step 2: Convert to fraction form
   58,719.15/81,030.20 = 31,861.10/x
3. Step 3: Cross multiply
   58,719.15x = 81,030.20 × 31,861.10
4. Step 4: Simplify right side
   58,719.15x = 2,581,710,740.76
5. Step 5: Solve for x
   x = 2,581,710,740.76/58,719.15
6. Step 6: Final answer
   x = 43,967.10