Finding the Fourth Proportional to 130,978.60, 196,302.70 and 56,010.12

Step by Step Solution

1. Step 1: Write the proportion equation
   130,978.60 : 196,302.70 = 56,010.12 : x
2. Step 2: Convert to fraction form
   130,978.60/196,302.70 = 56,010.12/x
3. Step 3: Cross multiply
   130,978.60x = 196,302.70 × 56,010.12
4. Step 4: Simplify right side
   130,978.60x = 10,994,937,783.32
5. Step 5: Solve for x
   x = 10,994,937,783.32/130,978.60
6. Step 6: Final answer
   x = 83,944.54