Finding the Fourth Proportional to 42,741,440, 64,111,475.28 and 13,594,855.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,741,440 : 64,111,475.28 = 13,594,855.76 : x
2. Step 2: Convert to fraction form
   42,741,440/64,111,475.28 = 13,594,855.76/x
3. Step 3: Cross multiply
   42,741,440x = 64,111,475.28 × 13,594,855.76
4. Step 4: Simplify right side
   42,741,440x = 871,586,258,992,405.62
5. Step 5: Solve for x
   x = 871,586,258,992,405.62/42,741,440
6. Step 6: Final answer
   x = 20,392,065.85