Finding the Fourth Proportional to 109,389.28, 164,068.98 and 42,875.89

Step by Step Solution

1. Step 1: Write the proportion equation
   109,389.28 : 164,068.98 = 42,875.89 : x
2. Step 2: Convert to fraction form
   109,389.28/164,068.98 = 42,875.89/x
3. Step 3: Cross multiply
   109,389.28x = 164,068.98 × 42,875.89
4. Step 4: Simplify right side
   109,389.28x = 7,034,603,538.89
5. Step 5: Solve for x
   x = 7,034,603,538.89/109,389.28
6. Step 6: Final answer
   x = 64,307.98