Finding the Fourth Proportional to 72,160,887, 99,592,806.26 and 56,806,514.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,160,887 : 99,592,806.26 = 56,806,514.04 : x
2. Step 2: Convert to fraction form
   72,160,887/99,592,806.26 = 56,806,514.04/x
3. Step 3: Cross multiply
   72,160,887x = 99,592,806.26 × 56,806,514.04
4. Step 4: Simplify right side
   72,160,887x = 5,657,520,147,091,690
5. Step 5: Solve for x
   x = 5,657,520,147,091,690/72,160,887
6. Step 6: Final answer
   x = 78,401,477.34