Finding the Fourth Proportional to 109,816.08, 151,573.32 and 72,141.36

Step by Step Solution

1. Step 1: Write the proportion equation
   109,816.08 : 151,573.32 = 72,141.36 : x
2. Step 2: Convert to fraction form
   109,816.08/151,573.32 = 72,141.36/x
3. Step 3: Cross multiply
   109,816.08x = 151,573.32 × 72,141.36
4. Step 4: Simplify right side
   109,816.08x = 10,934,705,444.52
5. Step 5: Solve for x
   x = 10,934,705,444.52/109,816.08
6. Step 6: Final answer
   x = 99,572.90