Finding the Fourth Proportional to 113,153.63, 156,134.61 and 65,397.74

Step by Step Solution

1. Step 1: Write the proportion equation
   113,153.63 : 156,134.61 = 65,397.74 : x
2. Step 2: Convert to fraction form
   113,153.63/156,134.61 = 65,397.74/x
3. Step 3: Cross multiply
   113,153.63x = 156,134.61 × 65,397.74
4. Step 4: Simplify right side
   113,153.63x = 10,210,849,849.11
5. Step 5: Solve for x
   x = 10,210,849,849.11/113,153.63
6. Step 6: Final answer
   x = 90,238.82