Finding the Fourth Proportional to 100,112.33, 138,108.33 and 57,646.25

Step by Step Solution

1. Step 1: Write the proportion equation
   100,112.33 : 138,108.33 = 57,646.25 : x
2. Step 2: Convert to fraction form
   100,112.33/138,108.33 = 57,646.25/x
3. Step 3: Cross multiply
   100,112.33x = 138,108.33 × 57,646.25
4. Step 4: Simplify right side
   100,112.33x = 7,961,426,627.72
5. Step 5: Solve for x
   x = 7,961,426,627.72/100,112.33
6. Step 6: Final answer
   x = 79,524.94