Finding the Fourth Proportional to 91,671.61, 137,507.53 and 25,112.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,671.61 : 137,507.53 = 25,112.31 : x
2. Step 2: Convert to fraction form
   91,671.61/137,507.53 = 25,112.31/x
3. Step 3: Cross multiply
   91,671.61x = 137,507.53 × 25,112.31
4. Step 4: Simplify right side
   91,671.61x = 3,453,131,595.13
5. Step 5: Solve for x
   x = 3,453,131,595.13/91,671.61
6. Step 6: Final answer
   x = 37,668.50