Finding the Fourth Proportional to 42,923,523.43, 64,385,674.37 and 12,218,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,923,523.43 : 64,385,674.37 = 12,218,090.72 : x
2. Step 2: Convert to fraction form
   42,923,523.43/64,385,674.37 = 12,218,090.72/x
3. Step 3: Cross multiply
   42,923,523.43x = 64,385,674.37 × 12,218,090.72
4. Step 4: Simplify right side
   42,923,523.43x = 786,670,010,521,038.88
5. Step 5: Solve for x
   x = 786,670,010,521,038.88/42,923,523.43
6. Step 6: Final answer
   x = 18,327,246.87