Finding the Fourth Proportional to 106,415.78, 159,670.73 and 55,802.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,415.78 : 159,670.73 = 55,802.72 : x
2. Step 2: Convert to fraction form
   106,415.78/159,670.73 = 55,802.72/x
3. Step 3: Cross multiply
   106,415.78x = 159,670.73 × 55,802.72
4. Step 4: Simplify right side
   106,415.78x = 8,910,059,961.02
5. Step 5: Solve for x
   x = 8,910,059,961.02/106,415.78
6. Step 6: Final answer
   x = 83,728.75