Finding the Fourth Proportional to 102,613.40, 153,791.61 and 55,111.76

Step by Step Solution

1. Step 1: Write the proportion equation
   102,613.40 : 153,791.61 = 55,111.76 : x
2. Step 2: Convert to fraction form
   102,613.40/153,791.61 = 55,111.76/x
3. Step 3: Cross multiply
   102,613.40x = 153,791.61 × 55,111.76
4. Step 4: Simplify right side
   102,613.40x = 8,475,726,300.33
5. Step 5: Solve for x
   x = 8,475,726,300.33/102,613.40
6. Step 6: Final answer
   x = 82,598.63