Finding the Fourth Proportional to 93,250.50, 139,897.89 and 30,921

Step by Step Solution

1. Step 1: Write the proportion equation
   93,250.50 : 139,897.89 = 30,921 : x
2. Step 2: Convert to fraction form
   93,250.50/139,897.89 = 30,921/x
3. Step 3: Cross multiply
   93,250.50x = 139,897.89 × 30,921
4. Step 4: Simplify right side
   93,250.50x = 4,325,782,656.69
5. Step 5: Solve for x
   x = 4,325,782,656.69/93,250.50
6. Step 6: Final answer
   x = 46,388.84