Finding the Fourth Proportional to 72,890.92, 109,401.99 and 37,855.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,890.92 : 109,401.99 = 37,855.18 : x
2. Step 2: Convert to fraction form
   72,890.92/109,401.99 = 37,855.18/x
3. Step 3: Cross multiply
   72,890.92x = 109,401.99 × 37,855.18
4. Step 4: Simplify right side
   72,890.92x = 4,141,432,023.81
5. Step 5: Solve for x
   x = 4,141,432,023.81/72,890.92
6. Step 6: Final answer
   x = 56,816.84