Finding the Fourth Proportional to 42,923,530.45, 64,385,684.90 and 12,218,097.73

Step by Step Solution

1. Step 1: Write the proportion equation
   42,923,530.45 : 64,385,684.90 = 12,218,097.73 : x
2. Step 2: Convert to fraction form
   42,923,530.45/64,385,684.90 = 12,218,097.73/x
3. Step 3: Cross multiply
   42,923,530.45x = 64,385,684.90 × 12,218,097.73
4. Step 4: Simplify right side
   42,923,530.45x = 786,670,590,521,185.25
5. Step 5: Solve for x
   x = 786,670,590,521,185.25/42,923,530.45
6. Step 6: Final answer
   x = 18,327,257.39