Finding the Fourth Proportional to 57,507.62, 78,936.52 and 51,079.46

Step by Step Solution

1. Step 1: Write the proportion equation
   57,507.62 : 78,936.52 = 51,079.46 : x
2. Step 2: Convert to fraction form
   57,507.62/78,936.52 = 51,079.46/x
3. Step 3: Cross multiply
   57,507.62x = 78,936.52 × 51,079.46
4. Step 4: Simplify right side
   57,507.62x = 4,032,034,815.88
5. Step 5: Solve for x
   x = 4,032,034,815.88/57,507.62
6. Step 6: Final answer
   x = 70,113.05