Finding the Fourth Proportional to 42,923,532.98, 64,385,688.69 and 12,218,100.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,923,532.98 : 64,385,688.69 = 12,218,100.28 : x
2. Step 2: Convert to fraction form
   42,923,532.98/64,385,688.69 = 12,218,100.28/x
3. Step 3: Cross multiply
   42,923,532.98x = 64,385,688.69 × 12,218,100.28
4. Step 4: Simplify right side
   42,923,532.98x = 786,670,800,850,317.62
5. Step 5: Solve for x
   x = 786,670,800,850,317.62/42,923,532.98
6. Step 6: Final answer
   x = 18,327,261.21