Finding the Fourth Proportional to 91,826.27, 137,739.18 and 51,827.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91,826.27 : 137,739.18 = 51,827.12 : x
2. Step 2: Convert to fraction form
   91,826.27/137,739.18 = 51,827.12/x
3. Step 3: Cross multiply
   91,826.27x = 137,739.18 × 51,827.12
4. Step 4: Simplify right side
   91,826.27x = 7,138,625,010.56
5. Step 5: Solve for x
   x = 7,138,625,010.56/91,826.27
6. Step 6: Final answer
   x = 77,740.55