Finding the Fourth Proportional to 208,061.87, 287,123.27 and 112,566.51

Step by Step Solution

1. Step 1: Write the proportion equation
   208,061.87 : 287,123.27 = 112,566.51 : x
2. Step 2: Convert to fraction form
   208,061.87/287,123.27 = 112,566.51/x
3. Step 3: Cross multiply
   208,061.87x = 287,123.27 × 112,566.51
4. Step 4: Simplify right side
   208,061.87x = 32,320,463,880.86
5. Step 5: Solve for x
   x = 32,320,463,880.86/208,061.87
6. Step 6: Final answer
   x = 155,340.64