Finding the Fourth Proportional to 168,719.56, 253,072.96 and 42,360.77

Step by Step Solution

1. Step 1: Write the proportion equation
   168,719.56 : 253,072.96 = 42,360.77 : x
2. Step 2: Convert to fraction form
   168,719.56/253,072.96 = 42,360.77/x
3. Step 3: Cross multiply
   168,719.56x = 253,072.96 × 42,360.77
4. Step 4: Simplify right side
   168,719.56x = 10,720,365,978.56
5. Step 5: Solve for x
   x = 10,720,365,978.56/168,719.56
6. Step 6: Final answer
   x = 63,539.56