Finding the Fourth Proportional to 58,112.07, 80,164.15 and 47,981.40

Step by Step Solution

1. Step 1: Write the proportion equation
   58,112.07 : 80,164.15 = 47,981.40 : x
2. Step 2: Convert to fraction form
   58,112.07/80,164.15 = 47,981.40/x
3. Step 3: Cross multiply
   58,112.07x = 80,164.15 × 47,981.40
4. Step 4: Simplify right side
   58,112.07x = 3,846,388,146.81
5. Step 5: Solve for x
   x = 3,846,388,146.81/58,112.07
6. Step 6: Final answer
   x = 66,189.14