Finding the Fourth Proportional to 42,705,293.40, 64,051,719.30 and 12,409,997.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,705,293.40 : 64,051,719.30 = 12,409,997.40 : x
2. Step 2: Convert to fraction form
   42,705,293.40/64,051,719.30 = 12,409,997.40/x
3. Step 3: Cross multiply
   42,705,293.40x = 64,051,719.30 × 12,409,997.40
4. Step 4: Simplify right side
   42,705,293.40x = 794,881,669,978,529.75
5. Step 5: Solve for x
   x = 794,881,669,978,529.75/42,705,293.40
6. Step 6: Final answer
   x = 18,613,188.36