Finding the Fourth Proportional to 109,507.90, 164,279.58 and 42,911.92

Step by Step Solution

1. Step 1: Write the proportion equation
   109,507.90 : 164,279.58 = 42,911.92 : x
2. Step 2: Convert to fraction form
   109,507.90/164,279.58 = 42,911.92/x
3. Step 3: Cross multiply
   109,507.90x = 164,279.58 × 42,911.92
4. Step 4: Simplify right side
   109,507.90x = 7,049,552,194.59
5. Step 5: Solve for x
   x = 7,049,552,194.59/109,507.90
6. Step 6: Final answer
   x = 64,374.83