Finding the Fourth Proportional to 42,763,274.53, 64,150,874.21 and 13,221,876.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,763,274.53 : 64,150,874.21 = 13,221,876.72 : x
2. Step 2: Convert to fraction form
   42,763,274.53/64,150,874.21 = 13,221,876.72/x
3. Step 3: Cross multiply
   42,763,274.53x = 64,150,874.21 × 13,221,876.72
4. Step 4: Simplify right side
   42,763,274.53x = 848,194,950,284,847.50
5. Step 5: Solve for x
   x = 848,194,950,284,847.50/42,763,274.53
6. Step 6: Final answer
   x = 19,834,658.59