Finding the Fourth Proportional to 42,892,986.82, 64,343,690.16 and 12,188,983

Step by Step Solution

1. Step 1: Write the proportion equation
   42,892,986.82 : 64,343,690.16 = 12,188,983 : x
2. Step 2: Convert to fraction form
   42,892,986.82/64,343,690.16 = 12,188,983/x
3. Step 3: Cross multiply
   42,892,986.82x = 64,343,690.16 × 12,188,983
4. Step 4: Simplify right side
   42,892,986.82x = 784,284,145,517,507.25
5. Step 5: Solve for x
   x = 784,284,145,517,507.25/42,892,986.82
6. Step 6: Final answer
   x = 18,284,670.84