Finding the Fourth Proportional to 42,804,915.20, 64,207,372.80 and 27,499,414.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,804,915.20 : 64,207,372.80 = 27,499,414.40 : x
2. Step 2: Convert to fraction form
   42,804,915.20/64,207,372.80 = 27,499,414.40/x
3. Step 3: Cross multiply
   42,804,915.20x = 64,207,372.80 × 27,499,414.40
4. Step 4: Simplify right side
   42,804,915.20x = 1,765,665,152,162,488.25
5. Step 5: Solve for x
   x = 1,765,665,152,162,488.25/42,804,915.20
6. Step 6: Final answer
   x = 41,249,121.60