Finding the Fourth Proportional to 98,665.59, 136,171.85 and 55,653.91

Step by Step Solution

1. Step 1: Write the proportion equation
   98,665.59 : 136,171.85 = 55,653.91 : x
2. Step 2: Convert to fraction form
   98,665.59/136,171.85 = 55,653.91/x
3. Step 3: Cross multiply
   98,665.59x = 136,171.85 × 55,653.91
4. Step 4: Simplify right side
   98,665.59x = 7,578,495,726.98
5. Step 5: Solve for x
   x = 7,578,495,726.98/98,665.59
6. Step 6: Final answer
   x = 76,809.91