Finding the Fourth Proportional to 98,893.56, 147,621 and 91,584.12

Step by Step Solution

1. Step 1: Write the proportion equation
   98,893.56 : 147,621 = 91,584.12 : x
2. Step 2: Convert to fraction form
   98,893.56/147,621 = 91,584.12/x
3. Step 3: Cross multiply
   98,893.56x = 147,621 × 91,584.12
4. Step 4: Simplify right side
   98,893.56x = 13,519,739,378.52
5. Step 5: Solve for x
   x = 13,519,739,378.52/98,893.56
6. Step 6: Final answer
   x = 136,710.01