Finding the Fourth Proportional to 58,059.32, 86,606.89 and 56,115.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,059.32 : 86,606.89 = 56,115.72 : x
2. Step 2: Convert to fraction form
   58,059.32/86,606.89 = 56,115.72/x
3. Step 3: Cross multiply
   58,059.32x = 86,606.89 × 56,115.72
4. Step 4: Simplify right side
   58,059.32x = 4,860,007,849.02
5. Step 5: Solve for x
   x = 4,860,007,849.02/58,059.32
6. Step 6: Final answer
   x = 83,707.63