Finding the Fourth Proportional to 91,128.48, 136,696.86 and 27,943.98

Step by Step Solution

1. Step 1: Write the proportion equation
   91,128.48 : 136,696.86 = 27,943.98 : x
2. Step 2: Convert to fraction form
   91,128.48/136,696.86 = 27,943.98/x
3. Step 3: Cross multiply
   91,128.48x = 136,696.86 × 27,943.98
4. Step 4: Simplify right side
   91,128.48x = 3,819,854,321.90
5. Step 5: Solve for x
   x = 3,819,854,321.90/91,128.48
6. Step 6: Final answer
   x = 41,917.24