Finding the Fourth Proportional to 151,386.81, 208,930.10 and 83,410.62

Step by Step Solution

1. Step 1: Write the proportion equation
   151,386.81 : 208,930.10 = 83,410.62 : x
2. Step 2: Convert to fraction form
   151,386.81/208,930.10 = 83,410.62/x
3. Step 3: Cross multiply
   151,386.81x = 208,930.10 × 83,410.62
4. Step 4: Simplify right side
   151,386.81x = 17,426,988,760.61
5. Step 5: Solve for x
   x = 17,426,988,760.61/151,386.81
6. Step 6: Final answer
   x = 115,115.63