Finding the Fourth Proportional to 42,557,807.92, 63,845,678.56 and 13,801,701.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,557,807.92 : 63,845,678.56 = 13,801,701.20 : x
2. Step 2: Convert to fraction form
   42,557,807.92/63,845,678.56 = 13,801,701.20/x
3. Step 3: Cross multiply
   42,557,807.92x = 63,845,678.56 × 13,801,701.20
4. Step 4: Simplify right side
   42,557,807.92x = 881,178,978,396,366.25
5. Step 5: Solve for x
   x = 881,178,978,396,366.25/42,557,807.92
6. Step 6: Final answer
   x = 20,705,459.74