Finding the Fourth Proportional to 141,980.85, 212,908.86 and 53,172.05

Step by Step Solution

1. Step 1: Write the proportion equation
   141,980.85 : 212,908.86 = 53,172.05 : x
2. Step 2: Convert to fraction form
   141,980.85/212,908.86 = 53,172.05/x
3. Step 3: Cross multiply
   141,980.85x = 212,908.86 × 53,172.05
4. Step 4: Simplify right side
   141,980.85x = 11,320,799,484.82
5. Step 5: Solve for x
   x = 11,320,799,484.82/141,980.85
6. Step 6: Final answer
   x = 79,734.69