Finding the Fourth Proportional to 291,456.37, 437,200.17 and 91,792.31

Step by Step Solution

1. Step 1: Write the proportion equation
   291,456.37 : 437,200.17 = 91,792.31 : x
2. Step 2: Convert to fraction form
   291,456.37/437,200.17 = 91,792.31/x
3. Step 3: Cross multiply
   291,456.37x = 437,200.17 × 91,792.31
4. Step 4: Simplify right side
   291,456.37x = 40,131,613,077.73
5. Step 5: Solve for x
   x = 40,131,613,077.73/291,456.37
6. Step 6: Final answer
   x = 137,693.38