Finding the Fourth Proportional to 140,261.51, 193,561.59 and 76,599.30

Step by Step Solution

1. Step 1: Write the proportion equation
   140,261.51 : 193,561.59 = 76,599.30 : x
2. Step 2: Convert to fraction form
   140,261.51/193,561.59 = 76,599.30/x
3. Step 3: Cross multiply
   140,261.51x = 193,561.59 × 76,599.30
4. Step 4: Simplify right side
   140,261.51x = 14,826,682,300.89
5. Step 5: Solve for x
   x = 14,826,682,300.89/140,261.51
6. Step 6: Final answer
   x = 105,707.42