Finding the Fourth Proportional to 208,420.02, 287,619.89 and 112,926.72

Step by Step Solution

1. Step 1: Write the proportion equation
   208,420.02 : 287,619.89 = 112,926.72 : x
2. Step 2: Convert to fraction form
   208,420.02/287,619.89 = 112,926.72/x
3. Step 3: Cross multiply
   208,420.02x = 287,619.89 × 112,926.72
4. Step 4: Simplify right side
   208,420.02x = 32,479,970,784.46
5. Step 5: Solve for x
   x = 32,479,970,784.46/208,420.02
6. Step 6: Final answer
   x = 155,839.02