Finding the Fourth Proportional to 103,258.16, 154,868.82 and 65,706.78

Step by Step Solution

1. Step 1: Write the proportion equation
   103,258.16 : 154,868.82 = 65,706.78 : x
2. Step 2: Convert to fraction form
   103,258.16/154,868.82 = 65,706.78/x
3. Step 3: Cross multiply
   103,258.16x = 154,868.82 × 65,706.78
4. Step 4: Simplify right side
   103,258.16x = 10,175,931,484.60
5. Step 5: Solve for x
   x = 10,175,931,484.60/103,258.16
6. Step 6: Final answer
   x = 98,548.45