Finding the Fourth Proportional to 208,000.58, 287,039.72 and 112,507.02

Step by Step Solution

1. Step 1: Write the proportion equation
   208,000.58 : 287,039.72 = 112,507.02 : x
2. Step 2: Convert to fraction form
   208,000.58/287,039.72 = 112,507.02/x
3. Step 3: Cross multiply
   208,000.58x = 287,039.72 × 112,507.02
4. Step 4: Simplify right side
   208,000.58x = 32,293,983,518.83
5. Step 5: Solve for x
   x = 32,293,983,518.83/208,000.58
6. Step 6: Final answer
   x = 155,259.10