Finding the Fourth Proportional to 64,556.89, 96,538.06 and 61,407.61

Step by Step Solution

1. Step 1: Write the proportion equation
   64,556.89 : 96,538.06 = 61,407.61 : x
2. Step 2: Convert to fraction form
   64,556.89/96,538.06 = 61,407.61/x
3. Step 3: Cross multiply
   64,556.89x = 96,538.06 × 61,407.61
4. Step 4: Simplify right side
   64,556.89x = 5,928,171,538.64
5. Step 5: Solve for x
   x = 5,928,171,538.64/64,556.89
6. Step 6: Final answer
   x = 91,828.64