Finding the Fourth Proportional to 64,012.15, 88,322.61 and 37,139.08

Step by Step Solution

1. Step 1: Write the proportion equation
   64,012.15 : 88,322.61 = 37,139.08 : x
2. Step 2: Convert to fraction form
   64,012.15/88,322.61 = 37,139.08/x
3. Step 3: Cross multiply
   64,012.15x = 88,322.61 × 37,139.08
4. Step 4: Simplify right side
   64,012.15x = 3,280,220,478.60
5. Step 5: Solve for x
   x = 3,280,220,478.60/64,012.15
6. Step 6: Final answer
   x = 51,243.72