Finding the Fourth Proportional to 78,172.11, 107,877.24 and 42,363

Step by Step Solution

1. Step 1: Write the proportion equation
   78,172.11 : 107,877.24 = 42,363 : x
2. Step 2: Convert to fraction form
   78,172.11/107,877.24 = 42,363/x
3. Step 3: Cross multiply
   78,172.11x = 107,877.24 × 42,363
4. Step 4: Simplify right side
   78,172.11x = 4,570,003,518.12
5. Step 5: Solve for x
   x = 4,570,003,518.12/78,172.11
6. Step 6: Final answer
   x = 58,460.79