Finding the Fourth Proportional to 58,060.32, 86,608.38 and 56,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,060.32 : 86,608.38 = 56,116.72 : x
2. Step 2: Convert to fraction form
   58,060.32/86,608.38 = 56,116.72/x
3. Step 3: Cross multiply
   58,060.32x = 86,608.38 × 56,116.72
4. Step 4: Simplify right side
   58,060.32x = 4,860,178,210.11
5. Step 5: Solve for x
   x = 4,860,178,210.11/58,060.32
6. Step 6: Final answer
   x = 83,709.12