Finding the Fourth Proportional to 151,869.50, 209,581.91 and 83,886.30

Step by Step Solution

1. Step 1: Write the proportion equation
   151,869.50 : 209,581.91 = 83,886.30 : x
2. Step 2: Convert to fraction form
   151,869.50/209,581.91 = 83,886.30/x
3. Step 3: Cross multiply
   151,869.50x = 209,581.91 × 83,886.30
4. Step 4: Simplify right side
   151,869.50x = 17,581,050,557.40
5. Step 5: Solve for x
   x = 17,581,050,557.40/151,869.50
6. Step 6: Final answer
   x = 115,764.20