Finding the Fourth Proportional to 128,062.59, 176,749.50 and 76,383

Step by Step Solution

1. Step 1: Write the proportion equation
   128,062.59 : 176,749.50 = 76,383 : x
2. Step 2: Convert to fraction form
   128,062.59/176,749.50 = 76,383/x
3. Step 3: Cross multiply
   128,062.59x = 176,749.50 × 76,383
4. Step 4: Simplify right side
   128,062.59x = 13,500,657,058.50
5. Step 5: Solve for x
   x = 13,500,657,058.50/128,062.59
6. Step 6: Final answer
   x = 105,422.33