Finding the Fourth Proportional to 139,019.06, 191,854.58 and 78,595.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,019.06 : 191,854.58 = 78,595.32 : x
2. Step 2: Convert to fraction form
   139,019.06/191,854.58 = 78,595.32/x
3. Step 3: Cross multiply
   139,019.06x = 191,854.58 × 78,595.32
4. Step 4: Simplify right side
   139,019.06x = 15,078,871,715.59
5. Step 5: Solve for x
   x = 15,078,871,715.59/139,019.06
6. Step 6: Final answer
   x = 108,466.22