Finding the Fourth Proportional to 113,150.63, 156,150.38 and 65,405.99

Step by Step Solution

1. Step 1: Write the proportion equation
   113,150.63 : 156,150.38 = 65,405.99 : x
2. Step 2: Convert to fraction form
   113,150.63/156,150.38 = 65,405.99/x
3. Step 3: Cross multiply
   113,150.63x = 156,150.38 × 65,405.99
4. Step 4: Simplify right side
   113,150.63x = 10,213,170,192.78
5. Step 5: Solve for x
   x = 10,213,170,192.78/113,150.63
6. Step 6: Final answer
   x = 90,261.72