Finding the Fourth Proportional to 118,126.87, 163,018.50 and 64,412.93

Step by Step Solution

1. Step 1: Write the proportion equation
   118,126.87 : 163,018.50 = 64,412.93 : x
2. Step 2: Convert to fraction form
   118,126.87/163,018.50 = 64,412.93/x
3. Step 3: Cross multiply
   118,126.87x = 163,018.50 × 64,412.93
4. Step 4: Simplify right side
   118,126.87x = 10,500,499,229.21
5. Step 5: Solve for x
   x = 10,500,499,229.21/118,126.87
6. Step 6: Final answer
   x = 88,891.71