Finding the Fourth Proportional to 151,688.76, 209,321.06 and 83,706.27

Step by Step Solution

1. Step 1: Write the proportion equation
   151,688.76 : 209,321.06 = 83,706.27 : x
2. Step 2: Convert to fraction form
   151,688.76/209,321.06 = 83,706.27/x
3. Step 3: Cross multiply
   151,688.76x = 209,321.06 × 83,706.27
4. Step 4: Simplify right side
   151,688.76x = 17,521,485,374.31
5. Step 5: Solve for x
   x = 17,521,485,374.31/151,688.76
6. Step 6: Final answer
   x = 115,509.45