Finding the Fourth Proportional to 85,445.63, 117,918.33 and 49,147.01

Step by Step Solution

1. Step 1: Write the proportion equation
   85,445.63 : 117,918.33 = 49,147.01 : x
2. Step 2: Convert to fraction form
   85,445.63/117,918.33 = 49,147.01/x
3. Step 3: Cross multiply
   85,445.63x = 117,918.33 × 49,147.01
4. Step 4: Simplify right side
   85,445.63x = 5,795,333,343.69
5. Step 5: Solve for x
   x = 5,795,333,343.69/85,445.63
6. Step 6: Final answer
   x = 67,824.81