Finding the Fourth Proportional to 109,381.86, 164,007.18 and 42,742.59

Step by Step Solution

1. Step 1: Write the proportion equation
   109,381.86 : 164,007.18 = 42,742.59 : x
2. Step 2: Convert to fraction form
   109,381.86/164,007.18 = 42,742.59/x
3. Step 3: Cross multiply
   109,381.86x = 164,007.18 × 42,742.59
4. Step 4: Simplify right side
   109,381.86x = 7,010,091,651.80
5. Step 5: Solve for x
   x = 7,010,091,651.80/109,381.86
6. Step 6: Final answer
   x = 64,088.25