Finding the Fourth Proportional to 64,488.51, 88,999.56 and 37,632.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,488.51 : 88,999.56 = 37,632.78 : x
2. Step 2: Convert to fraction form
   64,488.51/88,999.56 = 37,632.78/x
3. Step 3: Cross multiply
   64,488.51x = 88,999.56 × 37,632.78
4. Step 4: Simplify right side
   64,488.51x = 3,349,300,861.58
5. Step 5: Solve for x
   x = 3,349,300,861.58/64,488.51
6. Step 6: Final answer
   x = 51,936.40