Finding the Fourth Proportional to 124,509.96, 171,810.72 and 76,784.76

Step by Step Solution

1. Step 1: Write the proportion equation
   124,509.96 : 171,810.72 = 76,784.76 : x
2. Step 2: Convert to fraction form
   124,509.96/171,810.72 = 76,784.76/x
3. Step 3: Cross multiply
   124,509.96x = 171,810.72 × 76,784.76
4. Step 4: Simplify right side
   124,509.96x = 13,192,444,900.63
5. Step 5: Solve for x
   x = 13,192,444,900.63/124,509.96
6. Step 6: Final answer
   x = 105,954.94