Finding the Fourth Proportional to 42,762,168.67, 64,143,251.76 and 19,726,287.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,762,168.67 : 64,143,251.76 = 19,726,287.61 : x
2. Step 2: Convert to fraction form
   42,762,168.67/64,143,251.76 = 19,726,287.61/x
3. Step 3: Cross multiply
   42,762,168.67x = 64,143,251.76 × 19,726,287.61
4. Step 4: Simplify right side
   42,762,168.67x = 1,265,308,232,458,398.50
5. Step 5: Solve for x
   x = 1,265,308,232,458,398.50/42,762,168.67
6. Step 6: Final answer
   x = 29,589,430.84