Finding the Fourth Proportional to 42,840,808.10, 64,260,464.76 and 10,492,990.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,840,808.10 : 64,260,464.76 = 10,492,990.89 : x
2. Step 2: Convert to fraction form
   42,840,808.10/64,260,464.76 = 10,492,990.89/x
3. Step 3: Cross multiply
   42,840,808.10x = 64,260,464.76 × 10,492,990.89
4. Step 4: Simplify right side
   42,840,808.10x = 674,284,471,072,869.25
5. Step 5: Solve for x
   x = 674,284,471,072,869.25/42,840,808.10
6. Step 6: Final answer
   x = 15,739,303.27