Finding the Fourth Proportional to 42,050,522.40, 63,063,973.80 and 13,305,469.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,050,522.40 : 63,063,973.80 = 13,305,469.20 : x
2. Step 2: Convert to fraction form
   42,050,522.40/63,063,973.80 = 13,305,469.20/x
3. Step 3: Cross multiply
   42,050,522.40x = 63,063,973.80 × 13,305,469.20
4. Step 4: Simplify right side
   42,050,522.40x = 839,095,761,025,506.88
5. Step 5: Solve for x
   x = 839,095,761,025,506.88/42,050,522.40
6. Step 6: Final answer
   x = 19,954,466.99