Finding the Fourth Proportional to 77,875.61, 107,468.38 and 42,065.62

Step by Step Solution

1. Step 1: Write the proportion equation
   77,875.61 : 107,468.38 = 42,065.62 : x
2. Step 2: Convert to fraction form
   77,875.61/107,468.38 = 42,065.62/x
3. Step 3: Cross multiply
   77,875.61x = 107,468.38 × 42,065.62
4. Step 4: Simplify right side
   77,875.61x = 4,520,724,035.10
5. Step 5: Solve for x
   x = 4,520,724,035.10/77,875.61
6. Step 6: Final answer
   x = 58,050.58