Finding the Fourth Proportional to 55,503.34, 76,501.32 and 42,070.30

Step by Step Solution

1. Step 1: Write the proportion equation
   55,503.34 : 76,501.32 = 42,070.30 : x
2. Step 2: Convert to fraction form
   55,503.34/76,501.32 = 42,070.30/x
3. Step 3: Cross multiply
   55,503.34x = 76,501.32 × 42,070.30
4. Step 4: Simplify right side
   55,503.34x = 3,218,433,482.80
5. Step 5: Solve for x
   x = 3,218,433,482.80/55,503.34
6. Step 6: Final answer
   x = 57,986.30