Finding the Fourth Proportional to 72,875.68, 109,436.40 and 69,134.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,875.68 : 109,436.40 = 69,134.56 : x
2. Step 2: Convert to fraction form
   72,875.68/109,436.40 = 69,134.56/x
3. Step 3: Cross multiply
   72,875.68x = 109,436.40 × 69,134.56
4. Step 4: Simplify right side
   72,875.68x = 7,565,837,361.98
5. Step 5: Solve for x
   x = 7,565,837,361.98/72,875.68
6. Step 6: Final answer
   x = 103,818.41