Finding the Fourth Proportional to 61,321.50, 91,445.58 and 60,760.98

Step by Step Solution

1. Step 1: Write the proportion equation
   61,321.50 : 91,445.58 = 60,760.98 : x
2. Step 2: Convert to fraction form
   61,321.50/91,445.58 = 60,760.98/x
3. Step 3: Cross multiply
   61,321.50x = 91,445.58 × 60,760.98
4. Step 4: Simplify right side
   61,321.50x = 5,556,323,057.47
5. Step 5: Solve for x
   x = 5,556,323,057.47/61,321.50
6. Step 6: Final answer
   x = 90,609.71