Finding the Fourth Proportional to 112,803.90, 155,685.96 and 65,047.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,803.90 : 155,685.96 = 65,047.92 : x
2. Step 2: Convert to fraction form
   112,803.90/155,685.96 = 65,047.92/x
3. Step 3: Cross multiply
   112,803.90x = 155,685.96 × 65,047.92
4. Step 4: Simplify right side
   112,803.90x = 10,127,047,871.20
5. Step 5: Solve for x
   x = 10,127,047,871.20/112,803.90
6. Step 6: Final answer
   x = 89,775.69