Finding the Fourth Proportional to 98,632.50, 136,113.33 and 53,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,632.50 : 136,113.33 = 53,920.50 : x
2. Step 2: Convert to fraction form
   98,632.50/136,113.33 = 53,920.50/x
3. Step 3: Cross multiply
   98,632.50x = 136,113.33 × 53,920.50
4. Step 4: Simplify right side
   98,632.50x = 7,339,298,810.27
5. Step 5: Solve for x
   x = 7,339,298,810.27/98,632.50
6. Step 6: Final answer
   x = 74,410.55