Finding the Fourth Proportional to 118,188.48, 163,096.56 and 64,474.56

Step by Step Solution

1. Step 1: Write the proportion equation
   118,188.48 : 163,096.56 = 64,474.56 : x
2. Step 2: Convert to fraction form
   118,188.48/163,096.56 = 64,474.56/x
3. Step 3: Cross multiply
   118,188.48x = 163,096.56 × 64,474.56
4. Step 4: Simplify right side
   118,188.48x = 10,515,578,943.51
5. Step 5: Solve for x
   x = 10,515,578,943.51/118,188.48
6. Step 6: Final answer
   x = 88,972.96