Finding the Fourth Proportional to 91,017.78, 136,588.15 and 31,853.96

Step by Step Solution

1. Step 1: Write the proportion equation
   91,017.78 : 136,588.15 = 31,853.96 : x
2. Step 2: Convert to fraction form
   91,017.78/136,588.15 = 31,853.96/x
3. Step 3: Cross multiply
   91,017.78x = 136,588.15 × 31,853.96
4. Step 4: Simplify right side
   91,017.78x = 4,350,873,466.57
5. Step 5: Solve for x
   x = 4,350,873,466.57/91,017.78
6. Step 6: Final answer
   x = 47,802.46