Finding the Fourth Proportional to 64,663.94, 89,185.67 and 42,010.22

Step by Step Solution

1. Step 1: Write the proportion equation
   64,663.94 : 89,185.67 = 42,010.22 : x
2. Step 2: Convert to fraction form
   64,663.94/89,185.67 = 42,010.22/x
3. Step 3: Cross multiply
   64,663.94x = 89,185.67 × 42,010.22
4. Step 4: Simplify right side
   64,663.94x = 3,746,709,407.50
5. Step 5: Solve for x
   x = 3,746,709,407.50/64,663.94
6. Step 6: Final answer
   x = 57,941.25