Finding the Fourth Proportional to 99,496.10, 148,916.10 and 69,971.60

Step by Step Solution

1. Step 1: Write the proportion equation
   99,496.10 : 148,916.10 = 69,971.60 : x
2. Step 2: Convert to fraction form
   99,496.10/148,916.10 = 69,971.60/x
3. Step 3: Cross multiply
   99,496.10x = 148,916.10 × 69,971.60
4. Step 4: Simplify right side
   99,496.10x = 10,419,897,782.76
5. Step 5: Solve for x
   x = 10,419,897,782.76/99,496.10
6. Step 6: Final answer
   x = 104,726.70