Finding the Fourth Proportional to 208,162.28, 287,263.72 and 112,668.82

Step by Step Solution

1. Step 1: Write the proportion equation
   208,162.28 : 287,263.72 = 112,668.82 : x
2. Step 2: Convert to fraction form
   208,162.28/287,263.72 = 112,668.82/x
3. Step 3: Cross multiply
   208,162.28x = 287,263.72 × 112,668.82
4. Step 4: Simplify right side
   208,162.28x = 32,365,664,361.21
5. Step 5: Solve for x
   x = 32,365,664,361.21/208,162.28
6. Step 6: Final answer
   x = 155,482.85