Finding the Fourth Proportional to 201,659.68, 278,280.72 and 111,013.76

Step by Step Solution

1. Step 1: Write the proportion equation
   201,659.68 : 278,280.72 = 111,013.76 : x
2. Step 2: Convert to fraction form
   201,659.68/278,280.72 = 111,013.76/x
3. Step 3: Cross multiply
   201,659.68x = 278,280.72 × 111,013.76
4. Step 4: Simplify right side
   201,659.68x = 30,892,989,062.71
5. Step 5: Solve for x
   x = 30,892,989,062.71/201,659.68
6. Step 6: Final answer
   x = 153,193.68