Finding the Fourth Proportional to 64,749.78, 89,323.64 and 42,095.88

Step by Step Solution

1. Step 1: Write the proportion equation
   64,749.78 : 89,323.64 = 42,095.88 : x
2. Step 2: Convert to fraction form
   64,749.78/89,323.64 = 42,095.88/x
3. Step 3: Cross multiply
   64,749.78x = 89,323.64 × 42,095.88
4. Step 4: Simplify right side
   64,749.78x = 3,760,157,230.60
5. Step 5: Solve for x
   x = 3,760,157,230.60/64,749.78
6. Step 6: Final answer
   x = 58,072.12