Finding the Fourth Proportional to 42,923,528.90, 64,385,682.57 and 12,218,096.19

Step by Step Solution

1. Step 1: Write the proportion equation
   42,923,528.90 : 64,385,682.57 = 12,218,096.19 : x
2. Step 2: Convert to fraction form
   42,923,528.90/64,385,682.57 = 12,218,096.19/x
3. Step 3: Cross multiply
   42,923,528.90x = 64,385,682.57 × 12,218,096.19
4. Step 4: Simplify right side
   42,923,528.90x = 786,670,462,899,066.38
5. Step 5: Solve for x
   x = 786,670,462,899,066.38/42,923,528.90
6. Step 6: Final answer
   x = 18,327,255.08