Finding the Fourth Proportional to 91,987.82, 126,993.45 and 55,695.47

Step by Step Solution

1. Step 1: Write the proportion equation
   91,987.82 : 126,993.45 = 55,695.47 : x
2. Step 2: Convert to fraction form
   91,987.82/126,993.45 = 55,695.47/x
3. Step 3: Cross multiply
   91,987.82x = 126,993.45 × 55,695.47
4. Step 4: Simplify right side
   91,987.82x = 7,072,959,458.56
5. Step 5: Solve for x
   x = 7,072,959,458.56/91,987.82
6. Step 6: Final answer
   x = 76,890.17