Finding the Fourth Proportional to 91,157.83, 136,796.69 and 31,991.94

Step by Step Solution

1. Step 1: Write the proportion equation
   91,157.83 : 136,796.69 = 31,991.94 : x
2. Step 2: Convert to fraction form
   91,157.83/136,796.69 = 31,991.94/x
3. Step 3: Cross multiply
   91,157.83x = 136,796.69 × 31,991.94
4. Step 4: Simplify right side
   91,157.83x = 4,376,391,578.66
5. Step 5: Solve for x
   x = 4,376,391,578.66/91,157.83
6. Step 6: Final answer
   x = 48,008.95