Finding the Fourth Proportional to 59,645.07, 89,470.31 and 42,192.81

Step by Step Solution

1. Step 1: Write the proportion equation
   59,645.07 : 89,470.31 = 42,192.81 : x
2. Step 2: Convert to fraction form
   59,645.07/89,470.31 = 42,192.81/x
3. Step 3: Cross multiply
   59,645.07x = 89,470.31 × 42,192.81
4. Step 4: Simplify right side
   59,645.07x = 3,775,003,579.51
5. Step 5: Solve for x
   x = 3,775,003,579.51/59,645.07
6. Step 6: Final answer
   x = 63,291.12