Finding the Fourth Proportional to 208,290.06, 287,440.56 and 112,796.91

Step by Step Solution

1. Step 1: Write the proportion equation
   208,290.06 : 287,440.56 = 112,796.91 : x
2. Step 2: Convert to fraction form
   208,290.06/287,440.56 = 112,796.91/x
3. Step 3: Cross multiply
   208,290.06x = 287,440.56 × 112,796.91
4. Step 4: Simplify right side
   208,290.06x = 32,422,406,976.67
5. Step 5: Solve for x
   x = 32,422,406,976.67/208,290.06
6. Step 6: Final answer
   x = 155,659.89