Finding the Fourth Proportional to 208,155, 287,253.36 and 112,661.67

Step by Step Solution

1. Step 1: Write the proportion equation
   208,155 : 287,253.36 = 112,661.67 : x
2. Step 2: Convert to fraction form
   208,155/287,253.36 = 112,661.67/x
3. Step 3: Cross multiply
   208,155x = 287,253.36 × 112,661.67
4. Step 4: Simplify right side
   208,155x = 32,362,443,250.71
5. Step 5: Solve for x
   x = 32,362,443,250.71/208,155
6. Step 6: Final answer
   x = 155,472.81