Finding the Fourth Proportional to 98,667.59, 136,174.61 and 55,655.91

Step by Step Solution

1. Step 1: Write the proportion equation
   98,667.59 : 136,174.61 = 55,655.91 : x
2. Step 2: Convert to fraction form
   98,667.59/136,174.61 = 55,655.91/x
3. Step 3: Cross multiply
   98,667.59x = 136,174.61 × 55,655.91
4. Step 4: Simplify right side
   98,667.59x = 7,578,921,838.45
5. Step 5: Solve for x
   x = 7,578,921,838.45/98,667.59
6. Step 6: Final answer
   x = 76,812.68