Finding the Fourth Proportional to 102,792.63, 141,892.47 and 77,372.54

Step by Step Solution

1. Step 1: Write the proportion equation
   102,792.63 : 141,892.47 = 77,372.54 : x
2. Step 2: Convert to fraction form
   102,792.63/141,892.47 = 77,372.54/x
3. Step 3: Cross multiply
   102,792.63x = 141,892.47 × 77,372.54
4. Step 4: Simplify right side
   102,792.63x = 10,978,580,101.31
5. Step 5: Solve for x
   x = 10,978,580,101.31/102,792.63
6. Step 6: Final answer
   x = 106,803.18