Finding the Fourth Proportional to 98,111.86, 135,375.91 and 57,838.25

Step by Step Solution

1. Step 1: Write the proportion equation
   98,111.86 : 135,375.91 = 57,838.25 : x
2. Step 2: Convert to fraction form
   98,111.86/135,375.91 = 57,838.25/x
3. Step 3: Cross multiply
   98,111.86x = 135,375.91 × 57,838.25
4. Step 4: Simplify right side
   98,111.86x = 7,829,905,920.40
5. Step 5: Solve for x
   x = 7,829,905,920.40/98,111.86
6. Step 6: Final answer
   x = 79,805.91