Finding the Fourth Proportional to 98,478, 135,900.72 and 53,766

Step by Step Solution

1. Step 1: Write the proportion equation
   98,478 : 135,900.72 = 53,766 : x
2. Step 2: Convert to fraction form
   98,478/135,900.72 = 53,766/x
3. Step 3: Cross multiply
   98,478x = 135,900.72 × 53,766
4. Step 4: Simplify right side
   98,478x = 7,306,838,111.52
5. Step 5: Solve for x
   x = 7,306,838,111.52/98,478
6. Step 6: Final answer
   x = 74,197.67