Finding the Fourth Proportional to 113,160.22, 156,143.76 and 65,404.36

Step by Step Solution

1. Step 1: Write the proportion equation
   113,160.22 : 156,143.76 = 65,404.36 : x
2. Step 2: Convert to fraction form
   113,160.22/156,143.76 = 65,404.36/x
3. Step 3: Cross multiply
   113,160.22x = 156,143.76 × 65,404.36
4. Step 4: Simplify right side
   113,160.22x = 10,212,482,690.79
5. Step 5: Solve for x
   x = 10,212,482,690.79/113,160.22
6. Step 6: Final answer
   x = 90,247.99