Finding the Fourth Proportional to 132,109.88, 182,308.72 and 71,680.64

Step by Step Solution

1. Step 1: Write the proportion equation
   132,109.88 : 182,308.72 = 71,680.64 : x
2. Step 2: Convert to fraction form
   132,109.88/182,308.72 = 71,680.64/x
3. Step 3: Cross multiply
   132,109.88x = 182,308.72 × 71,680.64
4. Step 4: Simplify right side
   132,109.88x = 13,068,005,727.18
5. Step 5: Solve for x
   x = 13,068,005,727.18/132,109.88
6. Step 6: Final answer
   x = 98,917.70