Finding the Fourth Proportional to 73,983.76, 102,092.32 and 42,146.80

Step by Step Solution

1. Step 1: Write the proportion equation
   73,983.76 : 102,092.32 = 42,146.80 : x
2. Step 2: Convert to fraction form
   73,983.76/102,092.32 = 42,146.80/x
3. Step 3: Cross multiply
   73,983.76x = 102,092.32 × 42,146.80
4. Step 4: Simplify right side
   73,983.76x = 4,302,864,592.58
5. Step 5: Solve for x
   x = 4,302,864,592.58/73,983.76
6. Step 6: Final answer
   x = 58,159.58