Finding the Fourth Proportional to 115,912, 159,958.56 and 65,611

Step by Step Solution

1. Step 1: Write the proportion equation
   115,912 : 159,958.56 = 65,611 : x
2. Step 2: Convert to fraction form
   115,912/159,958.56 = 65,611/x
3. Step 3: Cross multiply
   115,912x = 159,958.56 × 65,611
4. Step 4: Simplify right side
   115,912x = 10,495,041,080.16
5. Step 5: Solve for x
   x = 10,495,041,080.16/115,912
6. Step 6: Final answer
   x = 90,543.18