Finding the Fourth Proportional to 99,522.10, 148,955.10 and 69,997.60

Step by Step Solution

1. Step 1: Write the proportion equation
   99,522.10 : 148,955.10 = 69,997.60 : x
2. Step 2: Convert to fraction form
   99,522.10/148,955.10 = 69,997.60/x
3. Step 3: Cross multiply
   99,522.10x = 148,955.10 × 69,997.60
4. Step 4: Simplify right side
   99,522.10x = 10,426,499,507.76
5. Step 5: Solve for x
   x = 10,426,499,507.76/99,522.10
6. Step 6: Final answer
   x = 104,765.67