Finding the Fourth Proportional to 42,707,233.12, 64,071,773.75 and 12,415,096.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,707,233.12 : 64,071,773.75 = 12,415,096.12 : x
2. Step 2: Convert to fraction form
   42,707,233.12/64,071,773.75 = 12,415,096.12/x
3. Step 3: Cross multiply
   42,707,233.12x = 64,071,773.75 × 12,415,096.12
4. Step 4: Simplify right side
   42,707,233.12x = 795,457,229,685,142.75
5. Step 5: Solve for x
   x = 795,457,229,685,142.75/42,707,233.12
6. Step 6: Final answer
   x = 18,625,819.83