Finding the Fourth Proportional to 77,918.76, 116,951.04 and 42,810.12

Step by Step Solution

1. Step 1: Write the proportion equation
   77,918.76 : 116,951.04 = 42,810.12 : x
2. Step 2: Convert to fraction form
   77,918.76/116,951.04 = 42,810.12/x
3. Step 3: Cross multiply
   77,918.76x = 116,951.04 × 42,810.12
4. Step 4: Simplify right side
   77,918.76x = 5,006,688,056.52
5. Step 5: Solve for x
   x = 5,006,688,056.52/77,918.76
6. Step 6: Final answer
   x = 64,255.23