Finding the Fourth Proportional to 101,290.82, 152,031.56 and 51,406.71

Step by Step Solution

1. Step 1: Write the proportion equation
   101,290.82 : 152,031.56 = 51,406.71 : x
2. Step 2: Convert to fraction form
   101,290.82/152,031.56 = 51,406.71/x
3. Step 3: Cross multiply
   101,290.82x = 152,031.56 × 51,406.71
4. Step 4: Simplify right side
   101,290.82x = 7,815,442,632.96
5. Step 5: Solve for x
   x = 7,815,442,632.96/101,290.82
6. Step 6: Final answer
   x = 77,158.45