Finding the Fourth Proportional to 51,238.50, 76,870.74 and 14,302.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,238.50 : 76,870.74 = 14,302.50 : x
2. Step 2: Convert to fraction form
   51,238.50/76,870.74 = 14,302.50/x
3. Step 3: Cross multiply
   51,238.50x = 76,870.74 × 14,302.50
4. Step 4: Simplify right side
   51,238.50x = 1,099,443,758.85
5. Step 5: Solve for x
   x = 1,099,443,758.85/51,238.50
6. Step 6: Final answer
   x = 21,457.38