Finding the Fourth Proportional to 112,903.06, 155,806.04 and 65,156.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,903.06 : 155,806.04 = 65,156.40 : x
2. Step 2: Convert to fraction form
   112,903.06/155,806.04 = 65,156.40/x
3. Step 3: Cross multiply
   112,903.06x = 155,806.04 × 65,156.40
4. Step 4: Simplify right side
   112,903.06x = 10,151,760,664.66
5. Step 5: Solve for x
   x = 10,151,760,664.66/112,903.06
6. Step 6: Final answer
   x = 89,915.73