Finding the Fourth Proportional to 208,199.30, 287,314.71 and 112,705.97

Step by Step Solution

1. Step 1: Write the proportion equation
   208,199.30 : 287,314.71 = 112,705.97 : x
2. Step 2: Convert to fraction form
   208,199.30/287,314.71 = 112,705.97/x
3. Step 3: Cross multiply
   208,199.30x = 287,314.71 × 112,705.97
4. Step 4: Simplify right side
   208,199.30x = 32,382,083,085.82
5. Step 5: Solve for x
   x = 32,382,083,085.82/208,199.30
6. Step 6: Final answer
   x = 155,534.06