Finding the Fourth Proportional to 124,796, 172,158.27 and 81,756.79

Step by Step Solution

1. Step 1: Write the proportion equation
   124,796 : 172,158.27 = 81,756.79 : x
2. Step 2: Convert to fraction form
   124,796/172,158.27 = 81,756.79/x
3. Step 3: Cross multiply
   124,796x = 172,158.27 × 81,756.79
4. Step 4: Simplify right side
   124,796x = 14,075,107,527.15
5. Step 5: Solve for x
   x = 14,075,107,527.15/124,796
6. Step 6: Final answer
   x = 112,784.93