Finding the Fourth Proportional to 52,980, 73,112.45 and 29,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,980 : 73,112.45 = 29,106.72 : x
2. Step 2: Convert to fraction form
   52,980/73,112.45 = 29,106.72/x
3. Step 3: Cross multiply
   52,980x = 73,112.45 × 29,106.72
4. Step 4: Simplify right side
   52,980x = 2,128,063,610.66
5. Step 5: Solve for x
   x = 2,128,063,610.66/52,980
6. Step 6: Final answer
   x = 40,167.30