Finding the Fourth Proportional to 113,085.99, 156,047.04 and 65,354.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,085.99 : 156,047.04 = 65,354.72 : x
2. Step 2: Convert to fraction form
   113,085.99/156,047.04 = 65,354.72/x
3. Step 3: Cross multiply
   113,085.99x = 156,047.04 × 65,354.72
4. Step 4: Simplify right side
   113,085.99x = 10,198,409,825.79
5. Step 5: Solve for x
   x = 10,198,409,825.79/113,085.99
6. Step 6: Final answer
   x = 90,182.79