Finding the Fourth Proportional to 76,631.02, 105,741.52 and 42,631.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,631.02 : 105,741.52 = 42,631.47 : x
2. Step 2: Convert to fraction form
   76,631.02/105,741.52 = 42,631.47/x
3. Step 3: Cross multiply
   76,631.02x = 105,741.52 × 42,631.47
4. Step 4: Simplify right side
   76,631.02x = 4,507,916,331.06
5. Step 5: Solve for x
   x = 4,507,916,331.06/76,631.02
6. Step 6: Final answer
   x = 58,826.26