Finding the Fourth Proportional to 72,946.15, 109,375.43 and 28,519.93

Step by Step Solution

1. Step 1: Write the proportion equation
   72,946.15 : 109,375.43 = 28,519.93 : x
2. Step 2: Convert to fraction form
   72,946.15/109,375.43 = 28,519.93/x
3. Step 3: Cross multiply
   72,946.15x = 109,375.43 × 28,519.93
4. Step 4: Simplify right side
   72,946.15x = 3,119,379,464.72
5. Step 5: Solve for x
   x = 3,119,379,464.72/72,946.15
6. Step 6: Final answer
   x = 42,762.77