Finding the Fourth Proportional to 208,415.72, 287,613.30 and 112,925

Step by Step Solution

1. Step 1: Write the proportion equation
   208,415.72 : 287,613.30 = 112,925 : x
2. Step 2: Convert to fraction form
   208,415.72/287,613.30 = 112,925/x
3. Step 3: Cross multiply
   208,415.72x = 287,613.30 × 112,925
4. Step 4: Simplify right side
   208,415.72x = 32,478,731,902.50
5. Step 5: Solve for x
   x = 32,478,731,902.50/208,415.72
6. Step 6: Final answer
   x = 155,836.29