Finding the Fourth Proportional to 53,365.31, 73,642.03 and 30,707.76

Step by Step Solution

1. Step 1: Write the proportion equation
   53,365.31 : 73,642.03 = 30,707.76 : x
2. Step 2: Convert to fraction form
   53,365.31/73,642.03 = 30,707.76/x
3. Step 3: Cross multiply
   53,365.31x = 73,642.03 × 30,707.76
4. Step 4: Simplify right side
   53,365.31x = 2,261,381,783.15
5. Step 5: Solve for x
   x = 2,261,381,783.15/53,365.31
6. Step 6: Final answer
   x = 42,375.50