Finding the Fourth Proportional to 110,085.98, 165,128.64 and 31,200.89

Step by Step Solution

1. Step 1: Write the proportion equation
   110,085.98 : 165,128.64 = 31,200.89 : x
2. Step 2: Convert to fraction form
   110,085.98/165,128.64 = 31,200.89/x
3. Step 3: Cross multiply
   110,085.98x = 165,128.64 × 31,200.89
4. Step 4: Simplify right side
   110,085.98x = 5,152,159,706.85
5. Step 5: Solve for x
   x = 5,152,159,706.85/110,085.98
6. Step 6: Final answer
   x = 46,801.24