Finding the Fourth Proportional to 77,969,499.60, 116,828,278.20 and 49,164,085.20

Step by Step Solution

1. Step 1: Write the proportion equation
   77,969,499.60 : 116,828,278.20 = 49,164,085.20 : x
2. Step 2: Convert to fraction form
   77,969,499.60/116,828,278.20 = 49,164,085.20/x
3. Step 3: Cross multiply
   77,969,499.60x = 116,828,278.20 × 49,164,085.20
4. Step 4: Simplify right side
   77,969,499.60x = 5,743,755,423,194,103
5. Step 5: Solve for x
   x = 5,743,755,423,194,103/77,969,499.60
6. Step 6: Final answer
   x = 73,666,695.99