Finding the Fourth Proportional to 91,796.52, 137,707.65 and 28,621.38

Step by Step Solution

1. Step 1: Write the proportion equation
   91,796.52 : 137,707.65 = 28,621.38 : x
2. Step 2: Convert to fraction form
   91,796.52/137,707.65 = 28,621.38/x
3. Step 3: Cross multiply
   91,796.52x = 137,707.65 × 28,621.38
4. Step 4: Simplify right side
   91,796.52x = 3,941,382,979.56
5. Step 5: Solve for x
   x = 3,941,382,979.56/91,796.52
6. Step 6: Final answer
   x = 42,936.08