Finding the Fourth Proportional to 114,539.50, 158,064.60 and 64,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   114,539.50 : 158,064.60 = 64,238.50 : x
2. Step 2: Convert to fraction form
   114,539.50/158,064.60 = 64,238.50/x
3. Step 3: Cross multiply
   114,539.50x = 158,064.60 × 64,238.50
4. Step 4: Simplify right side
   114,539.50x = 10,153,832,807.10
5. Step 5: Solve for x
   x = 10,153,832,807.10/114,539.50
6. Step 6: Final answer
   x = 88,649.18