Finding the Fourth Proportional to 67,131.78, 92,655.27 and 51,187.74

Step by Step Solution

1. Step 1: Write the proportion equation
   67,131.78 : 92,655.27 = 51,187.74 : x
2. Step 2: Convert to fraction form
   67,131.78/92,655.27 = 51,187.74/x
3. Step 3: Cross multiply
   67,131.78x = 92,655.27 × 51,187.74
4. Step 4: Simplify right side
   67,131.78x = 4,742,813,870.39
5. Step 5: Solve for x
   x = 4,742,813,870.39/67,131.78
6. Step 6: Final answer
   x = 70,649.31