Finding the Fourth Proportional to 91,758.16, 137,620.78 and 25,189.53

Step by Step Solution

1. Step 1: Write the proportion equation
   91,758.16 : 137,620.78 = 25,189.53 : x
2. Step 2: Convert to fraction form
   91,758.16/137,620.78 = 25,189.53/x
3. Step 3: Cross multiply
   91,758.16x = 137,620.78 × 25,189.53
4. Step 4: Simplify right side
   91,758.16x = 3,466,602,766.43
5. Step 5: Solve for x
   x = 3,466,602,766.43/91,758.16
6. Step 6: Final answer
   x = 37,779.78