Finding the Fourth Proportional to 78,035.19, 107,688.21 and 42,225.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,035.19 : 107,688.21 = 42,225.83 : x
2. Step 2: Convert to fraction form
   78,035.19/107,688.21 = 42,225.83/x
3. Step 3: Cross multiply
   78,035.19x = 107,688.21 × 42,225.83
4. Step 4: Simplify right side
   78,035.19x = 4,547,223,510.02
5. Step 5: Solve for x
   x = 4,547,223,510.02/78,035.19
6. Step 6: Final answer
   x = 58,271.45