Finding the Fourth Proportional to 100,152,276.60, 138,210,953.34 and 55,498,994.72

Step by Step Solution

1. Step 1: Write the proportion equation
   100,152,276.60 : 138,210,953.34 = 55,498,994.72 : x
2. Step 2: Convert to fraction form
   100,152,276.60/138,210,953.34 = 55,498,994.72/x
3. Step 3: Cross multiply
   100,152,276.60x = 138,210,953.34 × 55,498,994.72
4. Step 4: Simplify right side
   100,152,276.60x = 7,670,568,969,662,826
5. Step 5: Solve for x
   x = 7,670,568,969,662,826/100,152,276.60
6. Step 6: Final answer
   x = 76,589,062.48