Finding the Fourth Proportional to 117,864.72, 176,692.24 and 42,970.80

Step by Step Solution

1. Step 1: Write the proportion equation
   117,864.72 : 176,692.24 = 42,970.80 : x
2. Step 2: Convert to fraction form
   117,864.72/176,692.24 = 42,970.80/x
3. Step 3: Cross multiply
   117,864.72x = 176,692.24 × 42,970.80
4. Step 4: Simplify right side
   117,864.72x = 7,592,606,906.59
5. Step 5: Solve for x
   x = 7,592,606,906.59/117,864.72
6. Step 6: Final answer
   x = 64,417.98