Finding the Fourth Proportional to 114,196.18, 157,554.50 and 66,440.30

Step by Step Solution

1. Step 1: Write the proportion equation
   114,196.18 : 157,554.50 = 66,440.30 : x
2. Step 2: Convert to fraction form
   114,196.18/157,554.50 = 66,440.30/x
3. Step 3: Cross multiply
   114,196.18x = 157,554.50 × 66,440.30
4. Step 4: Simplify right side
   114,196.18x = 10,467,968,246.20
5. Step 5: Solve for x
   x = 10,467,968,246.20/114,196.18
6. Step 6: Final answer
   x = 91,666.54