Finding the Fourth Proportional to 208,142.02, 287,236.83 and 112,648.69

Step by Step Solution

1. Step 1: Write the proportion equation
   208,142.02 : 287,236.83 = 112,648.69 : x
2. Step 2: Convert to fraction form
   208,142.02/287,236.83 = 112,648.69/x
3. Step 3: Cross multiply
   208,142.02x = 287,236.83 × 112,648.69
4. Step 4: Simplify right side
   208,142.02x = 32,356,852,619.25
5. Step 5: Solve for x
   x = 32,356,852,619.25/208,142.02
6. Step 6: Final answer
   x = 155,455.65