Finding the Fourth Proportional to 76,969.51, 106,216.32 and 42,977.05

Step by Step Solution

1. Step 1: Write the proportion equation
   76,969.51 : 106,216.32 = 42,977.05 : x
2. Step 2: Convert to fraction form
   76,969.51/106,216.32 = 42,977.05/x
3. Step 3: Cross multiply
   76,969.51x = 106,216.32 × 42,977.05
4. Step 4: Simplify right side
   76,969.51x = 4,564,864,095.46
5. Step 5: Solve for x
   x = 4,564,864,095.46/76,969.51
6. Step 6: Final answer
   x = 59,307.43