Finding the Fourth Proportional to 52,809.60, 72,816.96 and 42,192

Step by Step Solution

1. Step 1: Write the proportion equation
   52,809.60 : 72,816.96 = 42,192 : x
2. Step 2: Convert to fraction form
   52,809.60/72,816.96 = 42,192/x
3. Step 3: Cross multiply
   52,809.60x = 72,816.96 × 42,192
4. Step 4: Simplify right side
   52,809.60x = 3,072,293,176.32
5. Step 5: Solve for x
   x = 3,072,293,176.32/52,809.60
6. Step 6: Final answer
   x = 58,176.79