Finding the Fourth Proportional to 99,499.05, 137,075.15 and 69,232.32

Step by Step Solution

1. Step 1: Write the proportion equation
   99,499.05 : 137,075.15 = 69,232.32 : x
2. Step 2: Convert to fraction form
   99,499.05/137,075.15 = 69,232.32/x
3. Step 3: Cross multiply
   99,499.05x = 137,075.15 × 69,232.32
4. Step 4: Simplify right side
   99,499.05x = 9,490,030,821.93
5. Step 5: Solve for x
   x = 9,490,030,821.93/99,499.05
6. Step 6: Final answer
   x = 95,378.10