Finding the Fourth Proportional to 98,300.28, 135,654.24 and 55,858.80

Step by Step Solution

1. Step 1: Write the proportion equation
   98,300.28 : 135,654.24 = 55,858.80 : x
2. Step 2: Convert to fraction form
   98,300.28/135,654.24 = 55,858.80/x
3. Step 3: Cross multiply
   98,300.28x = 135,654.24 × 55,858.80
4. Step 4: Simplify right side
   98,300.28x = 7,577,483,061.31
5. Step 5: Solve for x
   x = 7,577,483,061.31/98,300.28
6. Step 6: Final answer
   x = 77,085.06