Finding the Fourth Proportional to 112,880.86, 155,776.20 and 65,136.22

Step by Step Solution

1. Step 1: Write the proportion equation
   112,880.86 : 155,776.20 = 65,136.22 : x
2. Step 2: Convert to fraction form
   112,880.86/155,776.20 = 65,136.22/x
3. Step 3: Cross multiply
   112,880.86x = 155,776.20 × 65,136.22
4. Step 4: Simplify right side
   112,880.86x = 10,146,672,833.96
5. Step 5: Solve for x
   x = 10,146,672,833.96/112,880.86
6. Step 6: Final answer
   x = 89,888.34