Finding the Fourth Proportional to 77,955.10, 107,577.98 and 42,145.12

Step by Step Solution

1. Step 1: Write the proportion equation
   77,955.10 : 107,577.98 = 42,145.12 : x
2. Step 2: Convert to fraction form
   77,955.10/107,577.98 = 42,145.12/x
3. Step 3: Cross multiply
   77,955.10x = 107,577.98 × 42,145.12
4. Step 4: Simplify right side
   77,955.10x = 4,533,886,876.46
5. Step 5: Solve for x
   x = 4,533,886,876.46/77,955.10
6. Step 6: Final answer
   x = 58,160.23