Finding the Fourth Proportional to 151,510.79, 209,086.34 and 83,530.25

Step by Step Solution

1. Step 1: Write the proportion equation
   151,510.79 : 209,086.34 = 83,530.25 : x
2. Step 2: Convert to fraction form
   151,510.79/209,086.34 = 83,530.25/x
3. Step 3: Cross multiply
   151,510.79x = 209,086.34 × 83,530.25
4. Step 4: Simplify right side
   151,510.79x = 17,465,032,788.70
5. Step 5: Solve for x
   x = 17,465,032,788.70/151,510.79
6. Step 6: Final answer
   x = 115,272.54