Finding the Fourth Proportional to 64,734.51, 89,282.48 and 42,374.19

Step by Step Solution

1. Step 1: Write the proportion equation
   64,734.51 : 89,282.48 = 42,374.19 : x
2. Step 2: Convert to fraction form
   64,734.51/89,282.48 = 42,374.19/x
3. Step 3: Cross multiply
   64,734.51x = 89,282.48 × 42,374.19
4. Step 4: Simplify right side
   64,734.51x = 3,783,272,559.32
5. Step 5: Solve for x
   x = 3,783,272,559.32/64,734.51
6. Step 6: Final answer
   x = 58,442.90