Finding the Fourth Proportional to 151,156.56, 208,682.46 and 100,238.52

Step by Step Solution

1. Step 1: Write the proportion equation
   151,156.56 : 208,682.46 = 100,238.52 : x
2. Step 2: Convert to fraction form
   151,156.56/208,682.46 = 100,238.52/x
3. Step 3: Cross multiply
   151,156.56x = 208,682.46 × 100,238.52
4. Step 4: Simplify right side
   151,156.56x = 20,918,020,940.36
5. Step 5: Solve for x
   x = 20,918,020,940.36/151,156.56
6. Step 6: Final answer
   x = 138,386.46