Finding the Fourth Proportional to 42,893,009.82, 64,343,724.66 and 12,189,006

Step by Step Solution

1. Step 1: Write the proportion equation
   42,893,009.82 : 64,343,724.66 = 12,189,006 : x
2. Step 2: Convert to fraction form
   42,893,009.82/64,343,724.66 = 12,189,006/x
3. Step 3: Cross multiply
   42,893,009.82x = 64,343,724.66 × 12,189,006
4. Step 4: Simplify right side
   42,893,009.82x = 784,286,045,943,087.88
5. Step 5: Solve for x
   x = 784,286,045,943,087.88/42,893,009.82
6. Step 6: Final answer
   x = 18,284,705.35