Finding the Fourth Proportional to 52,065.37, 78,129.15 and 47,830.42

Step by Step Solution

1. Step 1: Write the proportion equation
   52,065.37 : 78,129.15 = 47,830.42 : x
2. Step 2: Convert to fraction form
   52,065.37/78,129.15 = 47,830.42/x
3. Step 3: Cross multiply
   52,065.37x = 78,129.15 × 47,830.42
4. Step 4: Simplify right side
   52,065.37x = 3,736,950,058.74
5. Step 5: Solve for x
   x = 3,736,950,058.74/52,065.37
6. Step 6: Final answer
   x = 71,774.20