Finding the Fourth Proportional to 132,969.84, 199,529.25 and 70,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   132,969.84 : 199,529.25 = 70,638.72 : x
2. Step 2: Convert to fraction form
   132,969.84/199,529.25 = 70,638.72/x
3. Step 3: Cross multiply
   132,969.84x = 199,529.25 × 70,638.72
4. Step 4: Simplify right side
   132,969.84x = 14,094,490,822.56
5. Step 5: Solve for x
   x = 14,094,490,822.56/132,969.84
6. Step 6: Final answer
   x = 105,997.65