Finding the Fourth Proportional to 103,580.42, 155,373.98 and 28,701.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,580.42 : 155,373.98 = 28,701.30 : x
2. Step 2: Convert to fraction form
   103,580.42/155,373.98 = 28,701.30/x
3. Step 3: Cross multiply
   103,580.42x = 155,373.98 × 28,701.30
4. Step 4: Simplify right side
   103,580.42x = 4,459,435,212.17
5. Step 5: Solve for x
   x = 4,459,435,212.17/103,580.42
6. Step 6: Final answer
   x = 43,052.88