Finding the Fourth Proportional to 103,767.98, 155,688.75 and 51,214.37

Step by Step Solution

1. Step 1: Write the proportion equation
   103,767.98 : 155,688.75 = 51,214.37 : x
2. Step 2: Convert to fraction form
   103,767.98/155,688.75 = 51,214.37/x
3. Step 3: Cross multiply
   103,767.98x = 155,688.75 × 51,214.37
4. Step 4: Simplify right side
   103,767.98x = 7,973,500,468.89
5. Step 5: Solve for x
   x = 7,973,500,468.89/103,767.98
6. Step 6: Final answer
   x = 76,839.70