Finding the Fourth Proportional to 78,228.04, 107,926.41 and 51,385

Step by Step Solution

1. Step 1: Write the proportion equation
   78,228.04 : 107,926.41 = 51,385 : x
2. Step 2: Convert to fraction form
   78,228.04/107,926.41 = 51,385/x
3. Step 3: Cross multiply
   78,228.04x = 107,926.41 × 51,385
4. Step 4: Simplify right side
   78,228.04x = 5,545,798,577.85
5. Step 5: Solve for x
   x = 5,545,798,577.85/78,228.04
6. Step 6: Final answer
   x = 70,892.72