Finding the Fourth Proportional to 56,886,310.72, 78,502,518.66 and 30,780,252.10

Step by Step Solution

1. Step 1: Write the proportion equation
   56,886,310.72 : 78,502,518.66 = 30,780,252.10 : x
2. Step 2: Convert to fraction form
   56,886,310.72/78,502,518.66 = 30,780,252.10/x
3. Step 3: Cross multiply
   56,886,310.72x = 78,502,518.66 × 30,780,252.10
4. Step 4: Simplify right side
   56,886,310.72x = 2,416,327,314,839,754
5. Step 5: Solve for x
   x = 2,416,327,314,839,754/56,886,310.72
6. Step 6: Final answer
   x = 42,476,428.59