Finding the Fourth Proportional to 119,561.76, 164,955.72 and 77,148.48

Step by Step Solution

1. Step 1: Write the proportion equation
   119,561.76 : 164,955.72 = 77,148.48 : x
2. Step 2: Convert to fraction form
   119,561.76/164,955.72 = 77,148.48/x
3. Step 3: Cross multiply
   119,561.76x = 164,955.72 × 77,148.48
4. Step 4: Simplify right side
   119,561.76x = 12,726,083,065.31
5. Step 5: Solve for x
   x = 12,726,083,065.31/119,561.76
6. Step 6: Final answer
   x = 106,439.41