Finding the Fourth Proportional to 98,707.33, 136,215.69 and 53,385.37

Step by Step Solution

1. Step 1: Write the proportion equation
   98,707.33 : 136,215.69 = 53,385.37 : x
2. Step 2: Convert to fraction form
   98,707.33/136,215.69 = 53,385.37/x
3. Step 3: Cross multiply
   98,707.33x = 136,215.69 × 53,385.37
4. Step 4: Simplify right side
   98,707.33x = 7,271,925,010.46
5. Step 5: Solve for x
   x = 7,271,925,010.46/98,707.33
6. Step 6: Final answer
   x = 73,671.58