Finding the Fourth Proportional to 172,077.32, 258,106.80 and 53,735.12

Step by Step Solution

1. Step 1: Write the proportion equation
   172,077.32 : 258,106.80 = 53,735.12 : x
2. Step 2: Convert to fraction form
   172,077.32/258,106.80 = 53,735.12/x
3. Step 3: Cross multiply
   172,077.32x = 258,106.80 × 53,735.12
4. Step 4: Simplify right side
   172,077.32x = 13,869,399,870.82
5. Step 5: Solve for x
   x = 13,869,399,870.82/172,077.32
6. Step 6: Final answer
   x = 80,599.81