Finding the Fourth Proportional to 91,769.76, 137,628.18 and 25,212.06

Step by Step Solution

1. Step 1: Write the proportion equation
   91,769.76 : 137,628.18 = 25,212.06 : x
2. Step 2: Convert to fraction form
   91,769.76/137,628.18 = 25,212.06/x
3. Step 3: Cross multiply
   91,769.76x = 137,628.18 × 25,212.06
4. Step 4: Simplify right side
   91,769.76x = 3,469,889,931.85
5. Step 5: Solve for x
   x = 3,469,889,931.85/91,769.76
6. Step 6: Final answer
   x = 37,810.82