Finding the Fourth Proportional to 85,443.63, 117,915.57 and 49,145.01

Step by Step Solution

1. Step 1: Write the proportion equation
   85,443.63 : 117,915.57 = 49,145.01 : x
2. Step 2: Convert to fraction form
   85,443.63/117,915.57 = 49,145.01/x
3. Step 3: Cross multiply
   85,443.63x = 117,915.57 × 49,145.01
4. Step 4: Simplify right side
   85,443.63x = 5,794,961,866.81
5. Step 5: Solve for x
   x = 5,794,961,866.81/85,443.63
6. Step 6: Final answer
   x = 67,822.05