Finding the Fourth Proportional to 109,516.59, 164,276.19 and 42,988.05

Step by Step Solution

1. Step 1: Write the proportion equation
   109,516.59 : 164,276.19 = 42,988.05 : x
2. Step 2: Convert to fraction form
   109,516.59/164,276.19 = 42,988.05/x
3. Step 3: Cross multiply
   109,516.59x = 164,276.19 × 42,988.05
4. Step 4: Simplify right side
   109,516.59x = 7,061,913,069.53
5. Step 5: Solve for x
   x = 7,061,913,069.53/109,516.59
6. Step 6: Final answer
   x = 64,482.59