Finding the Fourth Proportional to 57,184.89, 78,918.30 and 31,690.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,184.89 : 78,918.30 = 31,690.72 : x
2. Step 2: Convert to fraction form
   57,184.89/78,918.30 = 31,690.72/x
3. Step 3: Cross multiply
   57,184.89x = 78,918.30 × 31,690.72
4. Step 4: Simplify right side
   57,184.89x = 2,500,977,748.18
5. Step 5: Solve for x
   x = 2,500,977,748.18/57,184.89
6. Step 6: Final answer
   x = 43,734.94