Finding the Fourth Proportional to 151,560.69, 209,148.94 and 83,580.53

Step by Step Solution

1. Step 1: Write the proportion equation
   151,560.69 : 209,148.94 = 83,580.53 : x
2. Step 2: Convert to fraction form
   151,560.69/209,148.94 = 83,580.53/x
3. Step 3: Cross multiply
   151,560.69x = 209,148.94 × 83,580.53
4. Step 4: Simplify right side
   151,560.69x = 17,480,777,842.73
5. Step 5: Solve for x
   x = 17,480,777,842.73/151,560.69
6. Step 6: Final answer
   x = 115,338.47