Finding the Fourth Proportional to 91,788.68, 137,689.86 and 35,674.76

Step by Step Solution

1. Step 1: Write the proportion equation
   91,788.68 : 137,689.86 = 35,674.76 : x
2. Step 2: Convert to fraction form
   91,788.68/137,689.86 = 35,674.76/x
3. Step 3: Cross multiply
   91,788.68x = 137,689.86 × 35,674.76
4. Step 4: Simplify right side
   91,788.68x = 4,912,052,709.93
5. Step 5: Solve for x
   x = 4,912,052,709.93/91,788.68
6. Step 6: Final answer
   x = 53,514.80