Finding the Fourth Proportional to 100,061.69, 138,084.01 and 54,740.97

Step by Step Solution

1. Step 1: Write the proportion equation
   100,061.69 : 138,084.01 = 54,740.97 : x
2. Step 2: Convert to fraction form
   100,061.69/138,084.01 = 54,740.97/x
3. Step 3: Cross multiply
   100,061.69x = 138,084.01 × 54,740.97
4. Step 4: Simplify right side
   100,061.69x = 7,558,852,512.04
5. Step 5: Solve for x
   x = 7,558,852,512.04/100,061.69
6. Step 6: Final answer
   x = 75,541.93