Finding the Fourth Proportional to 208,481.30, 287,704.10 and 112,987.98

Step by Step Solution

1. Step 1: Write the proportion equation
   208,481.30 : 287,704.10 = 112,987.98 : x
2. Step 2: Convert to fraction form
   208,481.30/287,704.10 = 112,987.98/x
3. Step 3: Cross multiply
   208,481.30x = 287,704.10 × 112,987.98
4. Step 4: Simplify right side
   208,481.30x = 32,507,105,096.72
5. Step 5: Solve for x
   x = 32,507,105,096.72/208,481.30
6. Step 6: Final answer
   x = 155,923.36