Finding the Fourth Proportional to 151,664.96, 209,298.76 and 83,684.45

Step by Step Solution

1. Step 1: Write the proportion equation
   151,664.96 : 209,298.76 = 83,684.45 : x
2. Step 2: Convert to fraction form
   151,664.96/209,298.76 = 83,684.45/x
3. Step 3: Cross multiply
   151,664.96x = 209,298.76 × 83,684.45
4. Step 4: Simplify right side
   151,664.96x = 17,515,051,930.32
5. Step 5: Solve for x
   x = 17,515,051,930.32/151,664.96
6. Step 6: Final answer
   x = 115,485.16