Finding the Fourth Proportional to 98,456.76, 135,868.59 and 56,014.38

Step by Step Solution

1. Step 1: Write the proportion equation
   98,456.76 : 135,868.59 = 56,014.38 : x
2. Step 2: Convert to fraction form
   98,456.76/135,868.59 = 56,014.38/x
3. Step 3: Cross multiply
   98,456.76x = 135,868.59 × 56,014.38
4. Step 4: Simplify right side
   98,456.76x = 7,610,594,830.32
5. Step 5: Solve for x
   x = 7,610,594,830.32/98,456.76
6. Step 6: Final answer
   x = 77,298.86