Finding the Fourth Proportional to 42,893,010.82, 64,343,726.16 and 12,189,007

Step by Step Solution

1. Step 1: Write the proportion equation
   42,893,010.82 : 64,343,726.16 = 12,189,007 : x
2. Step 2: Convert to fraction form
   42,893,010.82/64,343,726.16 = 12,189,007/x
3. Step 3: Cross multiply
   42,893,010.82x = 64,343,726.16 × 12,189,007
4. Step 4: Simplify right side
   42,893,010.82x = 784,286,128,570,323.12
5. Step 5: Solve for x
   x = 784,286,128,570,323.12/42,893,010.82
6. Step 6: Final answer
   x = 18,284,706.85