Finding the Fourth Proportional to 52,092.90, 78,109.18 and 45,865.42

Step by Step Solution

1. Step 1: Write the proportion equation
   52,092.90 : 78,109.18 = 45,865.42 : x
2. Step 2: Convert to fraction form
   52,092.90/78,109.18 = 45,865.42/x
3. Step 3: Cross multiply
   52,092.90x = 78,109.18 × 45,865.42
4. Step 4: Simplify right side
   52,092.90x = 3,582,510,036.62
5. Step 5: Solve for x
   x = 3,582,510,036.62/52,092.90
6. Step 6: Final answer
   x = 68,771.56