Finding the Fourth Proportional to 78,345.60, 108,117 and 42,535.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,345.60 : 108,117 = 42,535.59 : x
2. Step 2: Convert to fraction form
   78,345.60/108,117 = 42,535.59/x
3. Step 3: Cross multiply
   78,345.60x = 108,117 × 42,535.59
4. Step 4: Simplify right side
   78,345.60x = 4,598,820,384.03
5. Step 5: Solve for x
   x = 4,598,820,384.03/78,345.60
6. Step 6: Final answer
   x = 58,699.15