Finding the Fourth Proportional to 42,414,016.80, 63,639,687.60 and 19,683,213.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,414,016.80 : 63,639,687.60 = 19,683,213.60 : x
2. Step 2: Convert to fraction form
   42,414,016.80/63,639,687.60 = 19,683,213.60/x
3. Step 3: Cross multiply
   42,414,016.80x = 63,639,687.60 × 19,683,213.60
4. Step 4: Simplify right side
   42,414,016.80x = 1,252,633,564,468,071.50
5. Step 5: Solve for x
   x = 1,252,633,564,468,071.50/42,414,016.80
6. Step 6: Final answer
   x = 29,533,481.12