Finding the Fourth Proportional to 151,086.16, 208,509.15 and 100,010.94

Step by Step Solution

1. Step 1: Write the proportion equation
   151,086.16 : 208,509.15 = 100,010.94 : x
2. Step 2: Convert to fraction form
   151,086.16/208,509.15 = 100,010.94/x
3. Step 3: Cross multiply
   151,086.16x = 208,509.15 × 100,010.94
4. Step 4: Simplify right side
   151,086.16x = 20,853,196,090.10
5. Step 5: Solve for x
   x = 20,853,196,090.10/151,086.16
6. Step 6: Final answer
   x = 138,021.88