Finding the Fourth Proportional to 72,946.89, 109,389.35 and 28,566.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,946.89 : 109,389.35 = 28,566.59 : x
2. Step 2: Convert to fraction form
   72,946.89/109,389.35 = 28,566.59/x
3. Step 3: Cross multiply
   72,946.89x = 109,389.35 × 28,566.59
4. Step 4: Simplify right side
   72,946.89x = 3,124,880,432.25
5. Step 5: Solve for x
   x = 3,124,880,432.25/72,946.89
6. Step 6: Final answer
   x = 42,837.74