Finding the Fourth Proportional to 113,072.60, 156,020.10 and 65,308.52

Step by Step Solution

1. Step 1: Write the proportion equation
   113,072.60 : 156,020.10 = 65,308.52 : x
2. Step 2: Convert to fraction form
   113,072.60/156,020.10 = 65,308.52/x
3. Step 3: Cross multiply
   113,072.60x = 156,020.10 × 65,308.52
4. Step 4: Simplify right side
   113,072.60x = 10,189,441,821.25
5. Step 5: Solve for x
   x = 10,189,441,821.25/113,072.60
6. Step 6: Final answer
   x = 90,114.16