Finding the Fourth Proportional to 90,992.84, 136,501.98 and 31,815.04

Step by Step Solution

1. Step 1: Write the proportion equation
   90,992.84 : 136,501.98 = 31,815.04 : x
2. Step 2: Convert to fraction form
   90,992.84/136,501.98 = 31,815.04/x
3. Step 3: Cross multiply
   90,992.84x = 136,501.98 × 31,815.04
4. Step 4: Simplify right side
   90,992.84x = 4,342,815,953.78
5. Step 5: Solve for x
   x = 4,342,815,953.78/90,992.84
6. Step 6: Final answer
   x = 47,727.01