Finding the Fourth Proportional to 101,380.32, 140,061.36 and 77,603.04

Step by Step Solution

1. Step 1: Write the proportion equation
   101,380.32 : 140,061.36 = 77,603.04 : x
2. Step 2: Convert to fraction form
   101,380.32/140,061.36 = 77,603.04/x
3. Step 3: Cross multiply
   101,380.32x = 140,061.36 × 77,603.04
4. Step 4: Simplify right side
   101,380.32x = 10,869,187,322.53
5. Step 5: Solve for x
   x = 10,869,187,322.53/101,380.32
6. Step 6: Final answer
   x = 107,212.00