Finding the Fourth Proportional to 77,875.13, 107,467.67 and 42,065.15

Step by Step Solution

1. Step 1: Write the proportion equation
   77,875.13 : 107,467.67 = 42,065.15 : x
2. Step 2: Convert to fraction form
   77,875.13/107,467.67 = 42,065.15/x
3. Step 3: Cross multiply
   77,875.13x = 107,467.67 × 42,065.15
4. Step 4: Simplify right side
   77,875.13x = 4,520,643,068.78
5. Step 5: Solve for x
   x = 4,520,643,068.78/77,875.13
6. Step 6: Final answer
   x = 58,049.89