Finding the Fourth Proportional to 42,735,818.60, 64,123,066.45 and 16,820,983.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,735,818.60 : 64,123,066.45 = 16,820,983.97 : x
2. Step 2: Convert to fraction form
   42,735,818.60/64,123,066.45 = 16,820,983.97/x
3. Step 3: Cross multiply
   42,735,818.60x = 64,123,066.45 × 16,820,983.97
4. Step 4: Simplify right side
   42,735,818.60x = 1,078,613,072,708,865.12
5. Step 5: Solve for x
   x = 1,078,613,072,708,865.12/42,735,818.60
6. Step 6: Final answer
   x = 25,239,087.68