Finding the Fourth Proportional to 163,962.39, 245,978.16 and 53,145.75

Step by Step Solution

1. Step 1: Write the proportion equation
   163,962.39 : 245,978.16 = 53,145.75 : x
2. Step 2: Convert to fraction form
   163,962.39/245,978.16 = 53,145.75/x
3. Step 3: Cross multiply
   163,962.39x = 245,978.16 × 53,145.75
4. Step 4: Simplify right side
   163,962.39x = 13,072,693,796.82
5. Step 5: Solve for x
   x = 13,072,693,796.82/163,962.39
6. Step 6: Final answer
   x = 79,729.83