Finding the Fourth Proportional to 208,275.58, 287,419.89 and 112,781.98

Step by Step Solution

1. Step 1: Write the proportion equation
   208,275.58 : 287,419.89 = 112,781.98 : x
2. Step 2: Convert to fraction form
   208,275.58/287,419.89 = 112,781.98/x
3. Step 3: Cross multiply
   208,275.58x = 287,419.89 × 112,781.98
4. Step 4: Simplify right side
   208,275.58x = 32,415,784,285.58
5. Step 5: Solve for x
   x = 32,415,784,285.58/208,275.58
6. Step 6: Final answer
   x = 155,638.91