Finding the Fourth Proportional to 91,716.72, 137,560.91 and 37,686.89

Step by Step Solution

1. Step 1: Write the proportion equation
   91,716.72 : 137,560.91 = 37,686.89 : x
2. Step 2: Convert to fraction form
   91,716.72/137,560.91 = 37,686.89/x
3. Step 3: Cross multiply
   91,716.72x = 137,560.91 × 37,686.89
4. Step 4: Simplify right side
   91,716.72x = 5,184,242,007.23
5. Step 5: Solve for x
   x = 5,184,242,007.23/91,716.72
6. Step 6: Final answer
   x = 56,524.50