Finding the Fourth Proportional to 151,441.01, 208,842.85 and 99,665.49

Step by Step Solution

1. Step 1: Write the proportion equation
   151,441.01 : 208,842.85 = 99,665.49 : x
2. Step 2: Convert to fraction form
   151,441.01/208,842.85 = 99,665.49/x
3. Step 3: Cross multiply
   151,441.01x = 208,842.85 × 99,665.49
4. Step 4: Simplify right side
   151,441.01x = 20,814,424,978.25
5. Step 5: Solve for x
   x = 20,814,424,978.25/151,441.01
6. Step 6: Final answer
   x = 137,442.46