Finding the Fourth Proportional to 208,158, 287,258.04 and 112,665.48

Step by Step Solution

1. Step 1: Write the proportion equation
   208,158 : 287,258.04 = 112,665.48 : x
2. Step 2: Convert to fraction form
   208,158/287,258.04 = 112,665.48/x
3. Step 3: Cross multiply
   208,158x = 287,258.04 × 112,665.48
4. Step 4: Simplify right side
   208,158x = 32,364,064,960.46
5. Step 5: Solve for x
   x = 32,364,064,960.46/208,158
6. Step 6: Final answer
   x = 155,478.36