Finding the Fourth Proportional to 139,030.36, 191,835.16 and 88,007.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,030.36 : 191,835.16 = 88,007.20 : x
2. Step 2: Convert to fraction form
   139,030.36/191,835.16 = 88,007.20/x
3. Step 3: Cross multiply
   139,030.36x = 191,835.16 × 88,007.20
4. Step 4: Simplify right side
   139,030.36x = 16,882,875,293.15
5. Step 5: Solve for x
   x = 16,882,875,293.15/139,030.36
6. Step 6: Final answer
   x = 121,433.01