Finding the Fourth Proportional to 72,360.36, 99,861.06 and 40,527.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,360.36 : 99,861.06 = 40,527.40 : x
2. Step 2: Convert to fraction form
   72,360.36/99,861.06 = 40,527.40/x
3. Step 3: Cross multiply
   72,360.36x = 99,861.06 × 40,527.40
4. Step 4: Simplify right side
   72,360.36x = 4,047,109,123.04
5. Step 5: Solve for x
   x = 4,047,109,123.04/72,360.36
6. Step 6: Final answer
   x = 55,929.92