Finding the Fourth Proportional to 76,877.63, 106,091.30 and 42,885.27

Step by Step Solution

1. Step 1: Write the proportion equation
   76,877.63 : 106,091.30 = 42,885.27 : x
2. Step 2: Convert to fraction form
   76,877.63/106,091.30 = 42,885.27/x
3. Step 3: Cross multiply
   76,877.63x = 106,091.30 × 42,885.27
4. Step 4: Simplify right side
   76,877.63x = 4,549,754,045.15
5. Step 5: Solve for x
   x = 4,549,754,045.15/76,877.63
6. Step 6: Final answer
   x = 59,181.77