Finding the Fourth Proportional to 73,978.76, 102,085.16 and 42,141.44

Step by Step Solution

1. Step 1: Write the proportion equation
   73,978.76 : 102,085.16 = 42,141.44 : x
2. Step 2: Convert to fraction form
   73,978.76/102,085.16 = 42,141.44/x
3. Step 3: Cross multiply
   73,978.76x = 102,085.16 × 42,141.44
4. Step 4: Simplify right side
   73,978.76x = 4,302,015,645.03
5. Step 5: Solve for x
   x = 4,302,015,645.03/73,978.76
6. Step 6: Final answer
   x = 58,152.04