Finding the Fourth Proportional to 73,931.28, 102,015.72 and 42,095.76

Step by Step Solution

1. Step 1: Write the proportion equation
   73,931.28 : 102,015.72 = 42,095.76 : x
2. Step 2: Convert to fraction form
   73,931.28/102,015.72 = 42,095.76/x
3. Step 3: Cross multiply
   73,931.28x = 102,015.72 × 42,095.76
4. Step 4: Simplify right side
   73,931.28x = 4,294,429,265.35
5. Step 5: Solve for x
   x = 4,294,429,265.35/73,931.28
6. Step 6: Final answer
   x = 58,086.77