Finding the Fourth Proportional to 113,089.75, 156,052.80 and 65,342.07

Step by Step Solution

1. Step 1: Write the proportion equation
   113,089.75 : 156,052.80 = 65,342.07 : x
2. Step 2: Convert to fraction form
   113,089.75/156,052.80 = 65,342.07/x
3. Step 3: Cross multiply
   113,089.75x = 156,052.80 × 65,342.07
4. Step 4: Simplify right side
   113,089.75x = 10,196,812,981.30
5. Step 5: Solve for x
   x = 10,196,812,981.30/113,089.75
6. Step 6: Final answer
   x = 90,165.67