Finding the Fourth Proportional to 42,901,843.42, 64,266,602.91 and 19,840,453.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,901,843.42 : 64,266,602.91 = 19,840,453.30 : x
2. Step 2: Convert to fraction form
   42,901,843.42/64,266,602.91 = 19,840,453.30/x
3. Step 3: Cross multiply
   42,901,843.42x = 64,266,602.91 × 19,840,453.30
4. Step 4: Simplify right side
   42,901,843.42x = 1,275,078,533,785,499
5. Step 5: Solve for x
   x = 1,275,078,533,785,499/42,901,843.42
6. Step 6: Final answer
   x = 29,720,833.24