Finding the Fourth Proportional to 131,835.46, 181,933.05 and 72,219.46

Step by Step Solution

1. Step 1: Write the proportion equation
   131,835.46 : 181,933.05 = 72,219.46 : x
2. Step 2: Convert to fraction form
   131,835.46/181,933.05 = 72,219.46/x
3. Step 3: Cross multiply
   131,835.46x = 181,933.05 × 72,219.46
4. Step 4: Simplify right side
   131,835.46x = 13,139,106,627.15
5. Step 5: Solve for x
   x = 13,139,106,627.15/131,835.46
6. Step 6: Final answer
   x = 99,662.92