Finding the Fourth Proportional to 91,019.42, 136,590.64 and 31,855.62

Step by Step Solution

1. Step 1: Write the proportion equation
   91,019.42 : 136,590.64 = 31,855.62 : x
2. Step 2: Convert to fraction form
   91,019.42/136,590.64 = 31,855.62/x
3. Step 3: Cross multiply
   91,019.42x = 136,590.64 × 31,855.62
4. Step 4: Simplify right side
   91,019.42x = 4,351,179,523.40
5. Step 5: Solve for x
   x = 4,351,179,523.40/91,019.42
6. Step 6: Final answer
   x = 47,804.96