Finding the Fourth Proportional to 90,347.98, 135,540.15 and 31,185.94

Step by Step Solution

1. Step 1: Write the proportion equation
   90,347.98 : 135,540.15 = 31,185.94 : x
2. Step 2: Convert to fraction form
   90,347.98/135,540.15 = 31,185.94/x
3. Step 3: Cross multiply
   90,347.98x = 135,540.15 × 31,185.94
4. Step 4: Simplify right side
   90,347.98x = 4,226,946,985.49
5. Step 5: Solve for x
   x = 4,226,946,985.49/90,347.98
6. Step 6: Final answer
   x = 46,785.19