Finding the Fourth Proportional to 83,886.40, 115,779.81 and 48,100.60

Step by Step Solution

1. Step 1: Write the proportion equation
   83,886.40 : 115,779.81 = 48,100.60 : x
2. Step 2: Convert to fraction form
   83,886.40/115,779.81 = 48,100.60/x
3. Step 3: Cross multiply
   83,886.40x = 115,779.81 × 48,100.60
4. Step 4: Simplify right side
   83,886.40x = 5,569,078,328.89
5. Step 5: Solve for x
   x = 5,569,078,328.89/83,886.40
6. Step 6: Final answer
   x = 66,388.33