Finding the Fourth Proportional to 100,810.22, 139,117.00 and 55,487.23

Step by Step Solution

1. Step 1: Write the proportion equation
   100,810.22 : 139,117.00 = 55,487.23 : x
2. Step 2: Convert to fraction form
   100,810.22/139,117.00 = 55,487.23/x
3. Step 3: Cross multiply
   100,810.22x = 139,117.00 × 55,487.23
4. Step 4: Simplify right side
   100,810.22x = 7,719,216,002.89
5. Step 5: Solve for x
   x = 7,719,216,002.89/100,810.22
6. Step 6: Final answer
   x = 76,571.76