Finding the Fourth Proportional to 109,473.05, 151,072.73 and 59,172.05

Step by Step Solution

1. Step 1: Write the proportion equation
   109,473.05 : 151,072.73 = 59,172.05 : x
2. Step 2: Convert to fraction form
   109,473.05/151,072.73 = 59,172.05/x
3. Step 3: Cross multiply
   109,473.05x = 151,072.73 × 59,172.05
4. Step 4: Simplify right side
   109,473.05x = 8,939,283,436.91
5. Step 5: Solve for x
   x = 8,939,283,436.91/109,473.05
6. Step 6: Final answer
   x = 81,657.39