Finding the Fourth Proportional to 139,876.32, 209,866.32 and 65,036.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,876.32 : 209,866.32 = 65,036.64 : x
2. Step 2: Convert to fraction form
   139,876.32/209,866.32 = 65,036.64/x
3. Step 3: Cross multiply
   139,876.32x = 209,866.32 × 65,036.64
4. Step 4: Simplify right side
   139,876.32x = 13,649,000,301.96
5. Step 5: Solve for x
   x = 13,649,000,301.96/139,876.32
6. Step 6: Final answer
   x = 97,579.06