Finding the Fourth Proportional to 109,384.86, 164,077.17 and 42,778.18

Step by Step Solution

1. Step 1: Write the proportion equation
   109,384.86 : 164,077.17 = 42,778.18 : x
2. Step 2: Convert to fraction form
   109,384.86/164,077.17 = 42,778.18/x
3. Step 3: Cross multiply
   109,384.86x = 164,077.17 × 42,778.18
4. Step 4: Simplify right side
   109,384.86x = 7,018,921,954.21
5. Step 5: Solve for x
   x = 7,018,921,954.21/109,384.86
6. Step 6: Final answer
   x = 64,167.22