Finding the Fourth Proportional to 155,638.47, 233,667.59 and 99,587.98

Step by Step Solution

1. Step 1: Write the proportion equation
   155,638.47 : 233,667.59 = 99,587.98 : x
2. Step 2: Convert to fraction form
   155,638.47/233,667.59 = 99,587.98/x
3. Step 3: Cross multiply
   155,638.47x = 233,667.59 × 99,587.98
4. Step 4: Simplify right side
   155,638.47x = 23,270,483,279.57
5. Step 5: Solve for x
   x = 23,270,483,279.57/155,638.47
6. Step 6: Final answer
   x = 149,516.27