Finding the Fourth Proportional to 99,521,746.83, 137,336,264.78 and 57,707,576.71

Step by Step Solution

1. Step 1: Write the proportion equation
   99,521,746.83 : 137,336,264.78 = 57,707,576.71 : x
2. Step 2: Convert to fraction form
   99,521,746.83/137,336,264.78 = 57,707,576.71/x
3. Step 3: Cross multiply
   99,521,746.83x = 137,336,264.78 × 57,707,576.71
4. Step 4: Simplify right side
   99,521,746.83x = 7,925,343,034,224,844
5. Step 5: Solve for x
   x = 7,925,343,034,224,844/99,521,746.83
6. Step 6: Final answer
   x = 79,634,283.83