Finding the Fourth Proportional to 98,536.78, 135,980.88 and 56,095.25

Step by Step Solution

1. Step 1: Write the proportion equation
   98,536.78 : 135,980.88 = 56,095.25 : x
2. Step 2: Convert to fraction form
   98,536.78/135,980.88 = 56,095.25/x
3. Step 3: Cross multiply
   98,536.78x = 135,980.88 × 56,095.25
4. Step 4: Simplify right side
   98,536.78x = 7,627,881,458.82
5. Step 5: Solve for x
   x = 7,627,881,458.82/98,536.78
6. Step 6: Final answer
   x = 77,411.52