Finding the Fourth Proportional to 139,052.55, 191,896.30 and 78,632.23

Step by Step Solution

1. Step 1: Write the proportion equation
   139,052.55 : 191,896.30 = 78,632.23 : x
2. Step 2: Convert to fraction form
   139,052.55/191,896.30 = 78,632.23/x
3. Step 3: Cross multiply
   139,052.55x = 191,896.30 × 78,632.23
4. Step 4: Simplify right side
   139,052.55x = 15,089,234,041.04
5. Step 5: Solve for x
   x = 15,089,234,041.04/139,052.55
6. Step 6: Final answer
   x = 108,514.62