Finding the Fourth Proportional to 64,308.78, 88,696.59 and 38,788.54

Step by Step Solution

1. Step 1: Write the proportion equation
   64,308.78 : 88,696.59 = 38,788.54 : x
2. Step 2: Convert to fraction form
   64,308.78/88,696.59 = 38,788.54/x
3. Step 3: Cross multiply
   64,308.78x = 88,696.59 × 38,788.54
4. Step 4: Simplify right side
   64,308.78x = 3,440,411,433.53
5. Step 5: Solve for x
   x = 3,440,411,433.53/64,308.78
6. Step 6: Final answer
   x = 53,498.31