Finding the Fourth Proportional to 99,131.32, 148,697.18 and 69,680.94

Step by Step Solution

1. Step 1: Write the proportion equation
   99,131.32 : 148,697.18 = 69,680.94 : x
2. Step 2: Convert to fraction form
   99,131.32/148,697.18 = 69,680.94/x
3. Step 3: Cross multiply
   99,131.32x = 148,697.18 × 69,680.94
4. Step 4: Simplify right side
   99,131.32x = 10,361,359,277.75
5. Step 5: Solve for x
   x = 10,361,359,277.75/99,131.32
6. Step 6: Final answer
   x = 104,521.55