Finding the Fourth Proportional to 98,911.56, 147,647.82 and 91,602.12

Step by Step Solution

1. Step 1: Write the proportion equation
   98,911.56 : 147,647.82 = 91,602.12 : x
2. Step 2: Convert to fraction form
   98,911.56/147,647.82 = 91,602.12/x
3. Step 3: Cross multiply
   98,911.56x = 147,647.82 × 91,602.12
4. Step 4: Simplify right side
   98,911.56x = 13,524,853,325.38
5. Step 5: Solve for x
   x = 13,524,853,325.38/98,911.56
6. Step 6: Final answer
   x = 136,736.83