Finding the Fourth Proportional to 208,385.02, 287,465.61 and 131,775.02

Step by Step Solution

1. Step 1: Write the proportion equation
   208,385.02 : 287,465.61 = 131,775.02 : x
2. Step 2: Convert to fraction form
   208,385.02/287,465.61 = 131,775.02/x
3. Step 3: Cross multiply
   208,385.02x = 287,465.61 × 131,775.02
4. Step 4: Simplify right side
   208,385.02x = 37,880,786,641.89
5. Step 5: Solve for x
   x = 37,880,786,641.89/208,385.02
6. Step 6: Final answer
   x = 181,782.68