Finding the Fourth Proportional to 109,372.16, 164,071.92 and 42,803.69

Step by Step Solution

1. Step 1: Write the proportion equation
   109,372.16 : 164,071.92 = 42,803.69 : x
2. Step 2: Convert to fraction form
   109,372.16/164,071.92 = 42,803.69/x
3. Step 3: Cross multiply
   109,372.16x = 164,071.92 × 42,803.69
4. Step 4: Simplify right side
   109,372.16x = 7,022,882,781.03
5. Step 5: Solve for x
   x = 7,022,882,781.03/109,372.16
6. Step 6: Final answer
   x = 64,210.88