Finding the Fourth Proportional to 52,131.57, 78,185.35 and 31,077.55

Step by Step Solution

1. Step 1: Write the proportion equation
   52,131.57 : 78,185.35 = 31,077.55 : x
2. Step 2: Convert to fraction form
   52,131.57/78,185.35 = 31,077.55/x
3. Step 3: Cross multiply
   52,131.57x = 78,185.35 × 31,077.55
4. Step 4: Simplify right side
   52,131.57x = 2,429,809,123.89
5. Step 5: Solve for x
   x = 2,429,809,123.89/52,131.57
6. Step 6: Final answer
   x = 46,609.17