Finding the Fourth Proportional to 151,440.01, 208,841.47 and 99,664.49

Step by Step Solution

1. Step 1: Write the proportion equation
   151,440.01 : 208,841.47 = 99,664.49 : x
2. Step 2: Convert to fraction form
   151,440.01/208,841.47 = 99,664.49/x
3. Step 3: Cross multiply
   151,440.01x = 208,841.47 × 99,664.49
4. Step 4: Simplify right side
   151,440.01x = 20,814,079,662.25
5. Step 5: Solve for x
   x = 20,814,079,662.25/151,440.01
6. Step 6: Final answer
   x = 137,441.09