Finding the Fourth Proportional to 64,738.71, 89,305.34 and 42,047.37

Step by Step Solution

1. Step 1: Write the proportion equation
   64,738.71 : 89,305.34 = 42,047.37 : x
2. Step 2: Convert to fraction form
   64,738.71/89,305.34 = 42,047.37/x
3. Step 3: Cross multiply
   64,738.71x = 89,305.34 × 42,047.37
4. Step 4: Simplify right side
   64,738.71x = 3,755,054,463.72
5. Step 5: Solve for x
   x = 3,755,054,463.72/64,738.71
6. Step 6: Final answer
   x = 58,003.23